Re: [RE-wrenches] Kit Solar

[Bradley Bassett via RE-wrenches]

An excellent idea and one that is catching on for DIY also. There is a
potential issue using those at below freezing temps, as with all Li
batteries they should not be charged at below freezing temps. You'd want to
look for one with heated batteries. There are more and more brands of these
power boxes available, but I'm not sure how many, if any, have heated
batteries. I'd hope that the heater would be powered only from a charging
source, but you'd probably have to ask the manufacturer. I think it's also
better to find and use those with LiFePO batteries for safety. For
industrial use it would be great to find something with the more expensive
LiTO batteries which are ok with lower temps, but I don't think there are
any battery banks with these, much less power boxes.

Brad Bassett

On Sat, Jun 8, 2024 at 3:34 AM Peter Giroux via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Jason
>
>
>
>   Saw your post and wanted to share an idea or two. We did a small system
> like this for a client a month ago. 3 100 watt panels through a combiner
> box to a “solar generator “ like device called a Jackery. 2000 watts,
> little bigger and heavier than a boom box.
>
>
>
>   There are several companies products to look at. There was a great
> article in Clean energy on this trend a month or two ago. Very popular in
> Europe, slowly growing here. Balcony solar is what I call it. Simple and
> easy.
>
>
>
> Thx
>
> Peter Giroux
>
> American Solar
>
>
>
> *From:* RE-wrenches  *On
> Behalf Of *Jason Szumlanski via RE-wrenches
> *Sent:* Friday, June 7, 2024 3:50 PM
> *To:* RE-wrenches 
> *Cc:* Jason Szumlanski 
> *Subject:* [RE-wrenches] Kit Solar
>
>
>
> I am getting more and more requests these days for very small PV systems
> to run minor AC loads. I recently cobbled together a kit for a
> security system on a tiki hut. It ended up being more expensive than I
> wanted it to be and overkill for the application.
>
>
>
> I just had a local government contact me with a request for several ultra
> small systems, and I was hoping to find an off-the-shelf kit that is plug
> and play. I don't have time to cobble together a bunch of small systems.
> It's easy to find DC kits for things like vehicle gates and lighting, but I
> can't find anything for small AC loads.
>
>
>
> In this particular case, all they need to operate is an Intermatic
> mechanical timer and a small controller with latching solenoids. I imagine
> something like a 100W solar panel with a small battery and 100W inverter
> would do the trick.
>
>
>
> Does anyone know of a source of small off-the-shelf kits like this?
>
>
>
>
>
> Jason Szumlanski
>
> Florida Solar Design Group
>
>
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Re: [RE-wrenches] Water system with Grundfos SQFlex

[Bradley Bassett via RE-wrenches]

Jay,

Grid tie 240VAC
Tanks > 100ft to house with some switches on the float switch wiring >
500ft to pump house with control switches and one CU200 and AC power supply
> 20ft to one well with pump that is 260ft down > 300ft from pump house to
the other CU200 > 300ft to the second pump that is 25ft down. This is the
pump we prefer to use and that failed.  I'll have to think about control
methods. I could conceivably use a relay in the pump house and simply turn
an AC pump on and off. The control wirings for the two pumps would have to
be completely isolated from each other.

Any recommendations for an AC pump?  250ft head, 600ft of #12 wire at
240VAC, minimal flow needed. The SQF has ~2 gpm, which is plenty. 500gal
storage tank with gravity feed to the house.

Thanks,
Brad

On Mon, May 27, 2024 at 11:39 AM jay  wrote:

> HI Brad,
>
> Is this off/on grid?
> And are the two wells near each other or they just join up at the tank and
> float switch?
>
> If you’ve got the power then I’d install just a standard AC centrifugal
> pump.  Sure uses more power but lasts forever. And is maybe $500 vs $2500
> And you’ve said minimal water use.
>
> since you switch back and forth you could use a DPDT relay to use the
> reverse logic float which the CU200 requires.
>
>
>
> > On May 27, 2024, at 12:23 PM, Bradley Bassett via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
> >
> > OK, all of the fittings were just fine. After pulling the pump it was
> obvious that there was a total failure of the Grundfos SQFlex 3SQF-2 pump
> head, both the rotor and the check valve. Water just pours through it in
> reverse with no pressure. On the last test in place it would not produce
> more than 75psi running on 240VAC deadheaded. This pump is only 10 years
> old and only served a two person household with minimal water use on AC
> power, so it did not run anywhere near as many hours as a solar pump.
> 100psi head. I'd buy a different pump if I could come up with a method of
> control. Float switch is 1200 ft away (half AWG#16 and half AWG#14) and a
> second SQFlex pump in the other well so I'd have to figure out how to
> control both pumps. I do switch from one to the other; they do not run at
> the same time. Remember that these float switches are reverse, close on
> high water.
> >
> > Back when I sold these, the pump head was not available separate from
> the motor, anyone know if that is still true?
> > Anyone have a good source for these? I'll look of course, but first hand
> knowledge from anyone here is good.
> >
> > I do also have a backward leaky check valve in the pump house which will
> be a lot of work to replace. I have a problem with cheap unions leaking
> also, but they do come in handy in cases like this. I might just cut
> through one of the pipes and put in a union. Otherwise I have to
> disassemble a lot of plumbing.
> >
> > Living in the country...
> >
> > Thanks,
> > Brad Bassett
> >
>
>
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Re: [RE-wrenches] Water system with Grundfos SQFlex

[Bradley Bassett via RE-wrenches]

OK, all of the fittings were just fine. After pulling the pump it was
obvious that there was a total failure of the Grundfos SQFlex 3SQF-2 pump
head, both the rotor and the check valve. Water just pours through it in
reverse with no pressure. On the last test in place it would not produce
more than 75psi running on 240VAC deadheaded. This pump is only 10 years
old and only served a two person household with minimal water use on AC
power, so it did not run anywhere near as many hours as a solar pump.
100psi head. I'd buy a different pump if I could come up with a method of
control. Float switch is 1200 ft away (half AWG#16 and half AWG#14) and a
second SQFlex pump in the other well so I'd have to figure out how to
control both pumps. I do switch from one to the other; they do not run at
the same time. Remember that these float switches are reverse, close on
high water.

Back when I sold these, the pump head was not available separate from the
motor, anyone know if that is still true?
Anyone have a good source for these? I'll look of course, but first hand
knowledge from anyone here is good.

I do also have a backward leaky check valve in the pump house which will be
a lot of work to replace. I have a problem with cheap unions leaking also,
but they do come in handy in cases like this. I might just cut through one
of the pipes and put in a union. Otherwise I have to disassemble a lot of
plumbing.

Living in the country...

Thanks,
Brad Bassett



On Mon, May 27, 2024 at 10:09 AM Ray Walters  wrote:

> Sorry Brad,
>
> It's been a long time since I did well work, and now, I can't find a
> supplier of the fittings.  The pics I sent earlier were just
> representative, but not exactly what I used in the past.  What I had used
> were bronze compression fittings similar to liquid tite conduit male
> adapters.  I have no idea who made them, or where I got them from. The
> closest I can find now are for poly gas line, and they're over $100/
> fitting at Grainger.
>
> [image: Main product photo] I use PEX and Shark bite fittings for any
> plumbing I'm doing now.  Never had a leak, super fast, and reversible.
>
> Ray
> On 5/26/2024 12:36 PM, Bradley Bassett wrote:
>
> Ray,
>
> Do you have a US supplier for either of these fittings? The Jentro fitting
> looks great, the Blueseal16 does not look like it would have much of a
> pressure rating. I did not find a specification.
>
> What do you all use for drop pipes for well pumps?  I have a 260ft deep
> well with galv, but the first batch corroded through, must have been a
> really bad batch. The second batch has been fine for many years. I can't
> bring myself to use PVC which is most common, I just have seen too many
> issues with it. Stainless is really expensive and hard to find threaded
> lengths, so I used very high pressure Poly. When it's rated for 300psi it
> has a very thick wall and is hard to get onto fittings, but is light weight
> and moderately flexible.
>
> Brad
>
> On Sun, May 26, 2024 at 11:17 AM Ray Walters via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> Hi Brad;
>>
>> I've seen a lot of leaks with barb fittings on poly pipe. I just replace
>> most of the poly plumbing at my place, because I just couldn't get it to
>> stop leaking. Black poly pipe is the lowest cost per foot, but not quite
>> bomb proof.   Barb fittings are really more suited for irrigation under 40
>> psi, where leaks are just part of the irrigation system.  Also, if the pipe
>> is exposed to sunlight, it can degrade and split open. Your described setup
>> would have sections above 100 psi, and that will really drive leaks.  There
>> are compression fittings for the poly pipe, which are better.  Here are
>> some examples:
>>
>>
>> Barb fittings would probably be fine towards the top at the storage
>> tanks, where the pressure is much lower, but at the pump, and top of the
>> well, where the pressure is over 100 psi, I'd be using something better.
>>
>> Good Luck,
>>
>> Ray Walters
>>
>
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Re: [RE-wrenches] Water system with Grundfos SQFlex

[Bradley Bassett via RE-wrenches]

Those are the exact inserts that I've used. Here's the clamps: clamps
<https://www.amazon.com/gp/product/B00H7YMVUO/ref=ox_sc_saved_title_7?smid==1>
I'm not too keen on buying from Amaz... so if you know of any other source
for these clamps let everyone know. I have installed two clamps per insert
and did rotate them as indicated. That just seemed like good practice at
the time. When installing the pipe onto these I used a camp stove and a pot
of boiling water. Stick the end of the pipe in the boiling water for a
little bit and they go on nicely. If it gets hard part way, I stick the
pipe end and insert both into the boiling water to finish the job.

I think I will not need any more inserts or clamps for this job, it looks
like the pitless adapter is the problem. I'll pull the pump tomorrow and
see if I can just replace the o-ring in it or if it needs something more.
Thanks for all the suggestions.
Brad



On Sun, May 26, 2024 at 2:31 PM jay  wrote:

> Hi Brad,
>
> Here is the  link.
>
>
> https://www.supplyhouse.com/Boshart-SSMAXL-100-1-Stainless-Steel-Male-Insert-Adapter-Extra-Long?utm_source=google_ad_medium=shopping_neutral_campaign=Shopping_Neutral_New_users_source=1=Cj0KCQjwu8uyBhC6ARIsAKwBGpQPie_fqna9Gi5uV3xJmRp-HuZVqG0d3rDUmMZSAikrkFZIrHRnqCQaAuZyEALw_wcB
>
> I’ve installed dozens of wells and dozens of hydros at high pressure using
> these.
> Multiple clamps per connector and I’ve had no leaks.
> Also while it doesn’t seem right, using teflon tape on the barbs actually
> helps to reduce leaks.
>
> Install the clamps at 120 or 180 degrees from each other is important.
>
> If you want to do it correctly then use a HDPE butt welding machine.  I
> just never could afford one.
>
> Jay
>
>
>
>
>
> On May 26, 2024, at 12:54 PM, Bradley Bassett via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
> Just went through all of Supplyhouse and did not find anything suitable.
> Off to do some looking down the well...
>
> On Sun, May 26, 2024 at 11:44 AM Dana Orzel via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> Brad – Try supplyhouse.com
>>
>> 888.757.4774
>>
>>
>>
>> _
>>
>> Dana OrzelGREAT SOLAR WORKS!
>>
>> C – 208.721.7003  E – d...@solarwork.com
>>
>> W - www. greatsolarworks.com www.solarwork.com
>>
>> *“Responsible Technologies for Responsible People since 1988!”*
>>
>>
>> ___
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Re: [RE-wrenches] Water system with Grundfos SQFlex

[Bradley Bassett via RE-wrenches]

Just went through all of Supplyhouse and did not find anything suitable.
Off to do some looking down the well...

On Sun, May 26, 2024 at 11:44 AM Dana Orzel via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Brad – Try supplyhouse.com
>
> 888.757.4774
>
>
>
> _
>
> Dana OrzelGREAT SOLAR WORKS!
>
> C – 208.721.7003  E – d...@solarwork.com
>
> W - www. greatsolarworks.com www.solarwork.com
>
> *“Responsible Technologies for Responsible People since 1988!”*
>
>
> ___
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Re: [RE-wrenches] Water system with Grundfos SQFlex

[Bradley Bassett via RE-wrenches]

Ray,

Do you have a US supplier for either of these fittings? The Jentro fitting
looks great, the Blueseal16 does not look like it would have much of a
pressure rating. I did not find a specification.

What do you all use for drop pipes for well pumps?  I have a 260ft deep
well with galv, but the first batch corroded through, must have been a
really bad batch. The second batch has been fine for many years. I can't
bring myself to use PVC which is most common, I just have seen too many
issues with it. Stainless is really expensive and hard to find threaded
lengths, so I used very high pressure Poly. When it's rated for 300psi it
has a very thick wall and is hard to get onto fittings, but is light weight
and moderately flexible.

Brad

On Sun, May 26, 2024 at 11:17 AM Ray Walters via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Hi Brad;
>
> I've seen a lot of leaks with barb fittings on poly pipe. I just replace
> most of the poly plumbing at my place, because I just couldn't get it to
> stop leaking. Black poly pipe is the lowest cost per foot, but not quite
> bomb proof.   Barb fittings are really more suited for irrigation under 40
> psi, where leaks are just part of the irrigation system.  Also, if the pipe
> is exposed to sunlight, it can degrade and split open. Your described setup
> would have sections above 100 psi, and that will really drive leaks.  There
> are compression fittings for the poly pipe, which are better.  Here are
> some examples:
>
> [image: PE pipe compression fitting for drinking water? Choose Blueseal16
> - SAB spa][image: Jentro Fittings sdr11 klem draadstuk]
>
> Barb fittings would probably be fine towards the top at the storage tanks,
> where the pressure is much lower, but at the pump, and top of the well,
> where the pressure is over 100 psi, I'd be using something better.
>
> Good Luck,
>
> Ray Walters
> Remote Solar
> On 5/26/2024 10:12 AM, Bradley Bassett via RE-wrenches wrote:
>
> Yes, lots of possibilities for leaks. I will be exploring them today.
> Thanks for the tips for finding the location. This setup uses 300psi 1"
> black poly pipe on a 25 ft drop, and then about 1200 ft run of the same
> pipe up 220ft elevation to the tanks up the hill with the house about 36ft
> below the tanks with only gravity feed (16 psi). All connections on the
> poly pipe are made with long stainless barb fittings with T-bolt clamps,
> pretty bomb proof stuff. There is a pitless adapter into the well casing, I
> will check that for sure under pressure. I'll also fix the check valve in
> the pump house. I seem to have a lot of issues with check valves, do they
> really fail so often? We do* not* have high mineral water. I've
> especially had issues with spring check valves and no longer use them. The
> one in my pump house is a swing check valve which I thought was pretty
> reliable. If I remember correctly, the check valve in these pumps is not
> replaceable. Fortunately, we actually have two wells, each with a
> 3SQF-2 pump that we can alternate for supply.  I'll let you know what I
> find.
>
> Way back in the '90's we had a customer with a solar pump that just would
> not perform. Even with a new pump, new control, check this and that, it
> just would not pump much water. It pumped fine when out of the well. The
> drop pipe did not have any obstruction. They finally ran the pump while it
> was out of the well with the drop pipe connected and under pressure, and
> discovered a crack in the PVC pipe that did not show up except under
> pressure. So leaks can indeed be hard to find.
>
> Brad
>
>
>
> On Sun, May 26, 2024 at 8:17 AM Jay via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> Hi all
>>
>> Yes the pump won’t go backwards but it’s possible there could be some
>> leakage through the helical coil.
>>
>> But both check valves have to fail which is a low probability.
>>
>> I’ve seen pipe broken due to someone closing a valve and not having a
>> pressure relief valve. Not knowing what kind of pipe/fittings  are being
>> used it could be corrosion has made a hole.
>>
>> Not knowing the layout it might be possible to split the plumbing and see
>> if the leakage is above or in the well.
>>
>> Lots of fun possibilities
>>
>> Jay
>>
>>
>> On May 26, 2024, at 9:03 AM, Roy Butler via RE-wrenches <
>> re-wrenches@lists.re-wrenches.org> wrote:
>>
>>  Brad,
>>
>> Windy might chime in at some point to back me up on this but I see no way
>> for that pump to turn backwards.
>> Reverse flow is likely a leak at the pump, the down well piping or at the
>> pitless adapter if there is one.
>>
>> Roy
>&

Re: [RE-wrenches] replacement needed for 12 vdc, 20w El-Sid circulator

[Bradley Bassett via RE-wrenches]

Let us know what size solar panel works well with the US Pumps D5. I did
not see where there was any data to indicate.  It looks like you could just
use the motor from the D5 and leave the old pump head in the water line?

Brad

On Sun, May 26, 2024 at 10:45 AM Dana Orzel via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> I have 19 Elvis pumps if you’re interested in one brand new in the box,
> but I have been replacing & not using them and using either GrundFoss or
> taco ECM which is the Alpha series I think in one of those brands but ECM
> is an electronically commutated motor takes AC turns to DC Super reliable
> adjustable speed much more reliable pumps in the Elcid but hey, I got 19
> Elvis’s if you want some contact me off-line
> Dana Orzel
> C: 208.721.7003
> E- d...@solarwork.com
>
> On May 26, 2024, at 11:21 AM, Kirk Herander via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
> 
> Thanks, I just found them online.Seems like the best alternative.
>
> On Sun, May 26, 2024 at 1:06 PM Dan Fink via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> Kirk; I found this place for a very remote client last year with an
>> ancient, failed El-Sid on a solar thermal system. I didn't do the
>> replacement as the site is too far away, but the client said it worked fine
>> upon installation and I haven't heard a word since.
>> https://www.ussolarpumps.com/el-sid/
>>
>> Dan Fink
>> Owner, Buckville Energy Consulting LLC
>> IREC Certified Instructor for PV and Small Wind Installation
>> NABCEP Certified PV System Inspector
>> NABCEP PV Associate
>> d anbo...@gmail.com
>> 970-672-4342
>>
>>
>>
>>
>> On Sun, May 26, 2024 at 10:38 AM Kirk Herander via RE-wrenches <
>> re-wrenches@lists.re-wrenches.org> wrote:
>>
>>> Hello,
>>>
>>> Any recommendations for replacement? A customer's El Sid on an old Sdhw
>>> system just failed after 20 years of service. It is powered directly from a
>>> PV module. Thanks in advance.
>>>
>>> --
>>>
>>> *Kirk Herander / **kirkh@vermont.solar *
>>>
>>> *Owner|Principal, VT Solar, LLC*
>>>
>>> *Celebrating our 33st Anniversary 1991-2024!!*
>>>
>>> dba Vermont Solar Engineering
>>>
>>> 802.559.1225
>>>
>>> ___
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>
> --
>
> *Kirk Herander / **kirkh@vermont.solar *
>
> *Owner|Principal, VT Solar, LLC*
>
> *Celebrating our 33st Anniversary 1991-2024!!*
>
> dba Vermont Solar Engineering
>
> 802.559.1225
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Re: [RE-wrenches] Water system with Grundfos SQFlex

[Bradley Bassett via RE-wrenches]

Yes, lots of possibilities for leaks. I will be exploring them today.
Thanks for the tips for finding the location. This setup uses 300psi 1"
black poly pipe on a 25 ft drop, and then about 1200 ft run of the same
pipe up 220ft elevation to the tanks up the hill with the house about 36ft
below the tanks with only gravity feed (16 psi). All connections on the
poly pipe are made with long stainless barb fittings with T-bolt clamps,
pretty bomb proof stuff. There is a pitless adapter into the well casing, I
will check that for sure under pressure. I'll also fix the check valve in
the pump house. I seem to have a lot of issues with check valves, do they
really fail so often? We do* not* have high mineral water. I've especially
had issues with spring check valves and no longer use them. The one in my
pump house is a swing check valve which I thought was pretty reliable. If I
remember correctly, the check valve in these pumps is not replaceable.
Fortunately, we actually have two wells, each with a 3SQF-2 pump that we
can alternate for supply.  I'll let you know what I find.

Way back in the '90's we had a customer with a solar pump that just would
not perform. Even with a new pump, new control, check this and that, it
just would not pump much water. It pumped fine when out of the well. The
drop pipe did not have any obstruction. They finally ran the pump while it
was out of the well with the drop pipe connected and under pressure, and
discovered a crack in the PVC pipe that did not show up except under
pressure. So leaks can indeed be hard to find.

Brad



On Sun, May 26, 2024 at 8:17 AM Jay via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Hi all
>
> Yes the pump won’t go backwards but it’s possible there could be some
> leakage through the helical coil.
>
> But both check valves have to fail which is a low probability.
>
> I’ve seen pipe broken due to someone closing a valve and not having a
> pressure relief valve. Not knowing what kind of pipe/fittings  are being
> used it could be corrosion has made a hole.
>
> Not knowing the layout it might be possible to split the plumbing and see
> if the leakage is above or in the well.
>
> Lots of fun possibilities
>
> Jay
>
>
> On May 26, 2024, at 9:03 AM, Roy Butler via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>  Brad,
>
> Windy might chime in at some point to back me up on this but I see no way
> for that pump to turn backwards.
> Reverse flow is likely a leak at the pump, the down well piping or at the
> pitless adapter if there is one.
>
> Roy
>
> Another old time solar and wind guy, hoping to be retired someday :-).
>
> Roy Butler
> Four Winds Renewable Energy, LLC
> 8902 Route 46, Arkport, NY 14807
>
>
> Education is when you read the fine print; experience is what you get when 
> you don’t.
>
> “The less people know, the more stubbornly they know it.”
>
> Although no trees were killed in the sending of this message,
> a large number of electrons were terribly inconvenienced.
>
>
>
> On 5/26/2024 10:10 AM, Dave Angelini Offgrid Solar via RE-wrenches wrote:
>
> Hey Brad,
>
> Sometimes shooting is best if you tell more on what you have done so far
> like using the SQF shooting guide, especially on a holiday weekend
> Assume there is a CU200 controller and pump is in ground still, must be
> with 100ft head, sorry
> No high amps? It runs, How old?
>
> --Dave
>
>
>
> *Dave Angelini Offgrid Solar
> "we go where powerlines don't"
><http://members.sti.net/offgridsolar/>https://offgridsolar1.com/ 
> <https://offgridsolar1.com/>  <http://members.sti.net/offgridsolar/>
> e-mail  offgridso...@sti.net 
> text 209 813 0060*
>
>
> On 2024-05-26 4:26 am, Jay via RE-wrenches wrote:
>
> Hi Brad
>
> With 2 check valves leaking I’d look for a broken pipe or a corroded
> fitting.
>
> If there is anyway to isolate between the 2 check valves then you could
> measure the pressure drop on both sides which should point to the direction
> of the leak.
>
> Jay
>
> On May 25, 2024, at 7:41 PM, Bradley Bassett via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>
> I have a water system with a Grundfos SQFlex SQF3-2 pump. I'm getting
> water flow in reverse either through the pump or a leak up to the pump. My
> question is if the check valve on the top of the pump is not sealing, will
> the progressive cavity pump allow water to flow through the pump in
> reverse? I'd think that with a positive displacement pump it would not,
> except very slowly or if it turned the motor backwards which I think would
> be very unlikely. There is about 100 psi head on  the pump.
>
> I think it's most likely I have a le

[RE-wrenches] Water system with Grundfos SQFlex

[Bradley Bassett via RE-wrenches]

I have a water system with a Grundfos SQFlex SQF3-2 pump. I'm getting water
flow in reverse either through the pump or a leak up to the pump. My
question is if the check valve on the top of the pump is not sealing, will
the progressive cavity pump allow water to flow through the pump in
reverse? I'd think that with a positive displacement pump it would not,
except very slowly or if it turned the motor backwards which I think would
be very unlikely. There is about 100 psi head on  the pump.

I think it's most likely I have a leak somewhere in the plumbing, and of
course another failed check valve farther up in the plumbing. It's possible
to get failures even with redundant protection if you have two concurrent
failures, which I must have here.

Brad Bassett
Old time solar guy who used to do solar pumping back in the '80's and
'90's. Mostly retired now.
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Re: [RE-wrenches] 120 Vac and 12Vdc mixed distribution system

[Bradley Bassett via RE-wrenches]

I had a lot of trouble keeping QO breakers functional on a 12VDC
distribution system. I'd have to move them around every week or so to keep
a good contact on the plug in contacts. They seem to work fine on a 24VDC
system. I went to using MNPV or MNDC breakers instead in PV combiner or
other MidNite boxes. QOU breakers are fine, but I don't know of any
standard distribution box for them.

Brad Bassett
Application Engineer retired

On Wed, Apr 24, 2024 at 11:42 AM Jason Szumlanski via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Hi Dave,
>
> I appreciate the concern. It's not one of those situations. We have a
> couple of barrier islands around here where people have set up what amounts
> to little fish camps that are used infrequently. The islands are also home
> to a few full-time/most-time residents and state parks. Everyone knows
> everyone. The clients are safe and reliable. These sites range from places
> that people paid just tens of thousands of dollars decades ago all the way
> up to many-multi-million dollar strips of sand where very wealthy people
> like to look out over Naples beach a couple times of year from their
> off-grid mansions. It's pretty interesting.
>
> I "get" why people who only take friends out a few times a year on a
> fishing expedition want a band-aid approach. There is no reason to throw
> $100K at a situation like this. In this case, I feel I can get creative to
> meet the very limited 12V and 120V needs while providing a reliable and
> long-lasting solution for around $25K and pocket enough money that I want
> to answer their call in the future. Right now they are getting by with 4 x
> 100W Solarland modules with a 9.6kWh battery bank and a Honda EU2000. I'm
> certain they will be blown away with the performance of whatever I propose,
> and happy that it is installed in a safe and professional manner.
>
> The current distribution systems look solid, each protected by a Square D
> QO breaker panel and professionally installed. The power production and
> delivery system is a total kludge that I feel I can fix without too much
> risk.
>
>
> Jason Szumlanski
> Principal Solar Designer | Florida Solar Design Group
> NABCEP Certified Solar Professional (PVIP)
> Florida State Certified Solar Contractor CVC56956
> Florida Certified Electrical Contractor EC13013208
>
>
> On Wed, Apr 24, 2024 at 2:19 PM Dave Angelini Offgrid Solar via
> RE-wrenches  wrote:
>
>> How about just buy an RV?
>>
>> Seriously the reason Jason I am Leary is because of the experiences I
>> have had with what I call Offgrid Squalor.
>>
>> Just have to be careful especially these days of druggies, people in vans
>> with no windows, ex paramilitary that went bad,
>> and you get the picture.
>>
>> If you know the person that is the way to keep you and your loved ones
>> safe. Money does talk sometimes and the lack can of it
>> can be a warning.
>>
>> Also as mentioned, these types of situations, are what gets my accountant
>> telling me if you do not charge enough,
>> no one will listen to your advice.
>>
>>
>>
>> *Dave Angelini Offgrid Solar
>> "we go where powerlines don't"
>>https://offgridsolar1.com/ 
>>   
>> e-mail  offgridso...@sti.net 
>> text 209 813 0060*
>>
>>
>> On 2024-04-24 10:51 am, John Blittersdorf via RE-wrenches wrote:
>>
>> Jason,
>>   Just using the converter works fine. They are considered a battery
>> charger or a regulated power supply. I am currently running that way now
>> with the battery cables going nowhere.  I was thinking of putting the
>> battery back in the system just for triple redundancy when my inverter hits
>> low battery cutoff voltage on a cold winter night and no fuel for the
>> generator (or it won't start).
>> My Iota DLS puts out a regulated 13.4 volts up to 30 amps.
>>
>> John
>>
>> On Wed, Apr 24, 2024 at 8:25 AM Jason Szumlanski via RE-wrenches <
>> re-wrenches@lists.re-wrenches.org> wrote:
>>
>> Ah ha! I didn't consider using a small 12V battery with a charger. I was
>> thinking of just using a 120V -> 12V converter to handle the DC loads. Is
>> the 12V battery really necessary, or can I just power the DC loads directly
>> with a converter? If I just have lights and fans on the DC system, the load
>> should be pretty minimal.
>>
>> I could use a separate 12V battery, but I would like to eliminate that
>> cost and complexity if possible.
>>
>>
>> And yeah, I am not considering this a money making opportunity. It's
>> really just a challenge to ward off boredom from the daily grind.
>>
>> Jason Szumlanski
>> Principal Solar Designer | Florida Solar Design Group
>> NABCEP Certified Solar Professional (PVIP)
>> Florida State Certified Solar Contractor CVC56956
>> Florida Certified Electrical Contractor EC13013208
>>
>> On Wed, Apr 24, 2024 at 8:01 AM John Blittersdorf via RE-wrenches <
>> re-wrenches@lists.re-wrenches.org> wrote:
>>
>> Jason,
>>   I 

Re: [RE-wrenches] Ballasted ground mounts

[Bradley Bassett via RE-wrenches]

Is Aerocompact still around ?  They had a nice simple ballasted ground mount

Brad Bassett

On Thu, Mar 21, 2024, 10:45 AM Kristopher Schmid via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Thanks for the info, Sam.
>
> I guess that I should have mentioned that I am looking at an 8kw
> residential application.
>
>
> Shine On!
>
> Kris Schmid
> Legacy Solar, LLC
> 137 West 1st Avenue
> Luck, WI 54853
> www.legacysolar.com
> 715-653-4295
> NABCEP Certified PV Installation Professional
> Licensed Wisconsin Master Electrician
> BSEE
>
>
> On Thu, Mar 21, 2024 at 12:39 PM Sam Haraldson 
> wrote:
>
>> I have experience with the APA Solar Racking Geo Ballast system and RBI
>> Solar's Ballasted Landfill Solution (GM-BL).  Both were simple and
>> effective.  The APA system consists of metal cages that get built on site
>> and then locally sourced river rock is added via skid steer.  The RBI
>> product uses huge, pre-cast concrete block that get formed at a
>> nearby facility and then are set into place with a large telehandler.
>>
>> Both of these solutions are manufacturer-engineered on a per-project
>> basis and as such have a minimum project size before they'll consider you.
>> So they're good options for 100kw and up projects but not backyard
>> systems.
>>
>> Cheers,
>> Sam
>>
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Re: [RE-wrenches] Non-battery string inverter options?

[Bradley Bassett via RE-wrenches]

Growatt MIN. They're capable of battery connection but work fine as a
string inverter at a decent price.

Brad

On Fri, Feb 23, 2024 at 4:09 AM Glenn Burt via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Fronius.
> Solis
>
> -Glenn
> Sent from my 'smart'phone, so please excuse typos and spelling errors.
>
> -- Original message--
> *From: *William Miller via RE-wrenches
> *Date: *Thu, Feb 22, 2024 6:56 PM
> *To: *RE-wrenches;
> *Cc: *William Miller;
> *Subject:*[RE-wrenches] Non-battery string inverter options?
>
> Friends:
>
>
>
> Now that RSS is required on almost every installation, I am having trouble
> finding a plain old, non-battery, non-MLPE string inverter.  This is for a
> ground mount with the inverter mounted to the rack-- the only scenario I
> can imagine that does not require RSS.  I don’t need or want battery
> capability, now or in the future.  The project does not have shading issues
> and the inverter will be mounted on the array, so no version of MLPE is
> needed.
>
>
>
> My usual go-to would be the legacy SMA Sunny Boy series.  I can’t dine one
> for sale and I am getting the impression these are no longer available.
>
>
>
> What might you recommend for this new installation?
>
>
>
> This brings up the question:  Of all the Sunny Boy installations I  have
> out there, the next time one fails, what am I going to replace it with?
>
>
>
> The new Sunny Boy Smarty-Pants series is not yet shipping, it is very
> expensive and to replace a grid-connected inverter I don’t need battery
> capabilities.
>
>
>
> I can’t use Solar Edge because I won’t want to unwire a complete array and
> add optimizers.
>
>
>
> I am not that taken with Sol-Ark, not only because it includes the word
> Arc in its name.  I don’t need the battery capabilities, AC load center or
> any of the other complexities.
>
>
>
> Any advice is appreciated.
>
>
>
> William
>
>
>
> Miller Solar
>
> 17395 Oak Road, Atascadero, CA 93422
>
> 805-438-5600
>
> www.millersolar.com
>
> CA Lic. 773985
>
>
>
>
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Re: [RE-wrenches] Outback Board Repair

[Bradley Bassett via RE-wrenches]

Regarding AEE and off grid support, I'm not really in touch with them much
any more so I can't say. You could ask Glenn Hall, he'd be able to say if
he's heard anything about hiring a new tech.  Of course finding someone
with much off grid experience would be hard. Glenn and Alex do have some
experience and may be able to help out.

Brad

On Wed, Feb 21, 2024 at 12:15 PM Nick A Lucchese via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Zonna is a dependable resource. I often find they have more repair boards
> and parts in their inventory than Outback does themselves. Whether the
> older legacy boards or newer VFXR series, Zonna has them. I think of them
> as the off grid distributor solution provider that AEE used to be known for.
>
> Bradley B., has AEE made any effort to hire anyone that can attempt to
> offer the type of support and knowledge you were known for? Perhaps this is
> the reason they are phasing out Outback?
>
> Wallace, am I understanding correctly that they now offer repair services
> or refurbished board sets? I’ve only purchased new from them in the past
> and last time it seemed Kris Stone was perhaps too overburdened for an
> expedient repair solution. Judging by the amount of failures myself or
> other off grid focused Outback dealers out there I imagine Kris would be
> tied up for years! Not trying to throw any negativity towards Outback as I
> know many are trying to deal with growing pains and providing sufficient
> support but it can certainly be painful at times. Really looking forward to
> going all in on Midnite’s newest offerings once they get the comms box out.
> Really loving the Barcelona and Rosie so far.
>
> Nick
>
>
>
>
>
>
> On Feb 21, 2024, at 11:23 AM, Wallace Stahle via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
> Zonna Energy is one option.  Thats zone-ah
>
> I sent them a faulty radian stack after they sent me a repaired one.
>
> 330-674-1750.   Ask for Amos or  Ext. 2.   zonnaenergy.com
>
> On Feb 21, 2024, at 11:00 AM, Matt Sherald via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
> Hi All,
>
> I'm looking to move along some damaged Outback (GVFX and VFX) boards.
>
> I found an older thread referencing Kris Stone, but didn't have luck with
> the email.
>
> Any suggestions would be appreciated.  Thanks!
>
> --
> Matt Sherald
> PIMBY Energy, LLC
> 304-704-5943
>
>
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Re: [RE-wrenches] Tigo RSS Off Grid

[Bradley Bassett via RE-wrenches]

I powered a MidNite LSOB transmitter from a Classic AUX, though the
receivers didn't work with the Classic. The Classic is limited to 200ma
output and the Tigo and APS transmitters are rated at up to 800ma input, so
it might overload the Classic AUX output if they really do draw that much.

I tested an APS RSD system recently with a Classic and it did not work
well. I believe that the Tigo transmitter is very similar since the APS
devices say "licensed by Tigo" on them, So, the Tigo RSD devices may not
work well with a Classic either.

What I recommended while at AEE was to use a 48VDC to 12VDC converter to
power the Tigo and APS transmitters. This works well. Here's the one I
recommended if it's still available:  mean-well/ddr30l12
I
never had any negative feedback using this with a Sol-Ark and APS devices.

With a Classic in the system I've had to use the FireRaptor RSD devices. If
you can get approval or have older modules, you might be able to follow the
FireRaptor instructions and use 2 modules in series for each FireRaptor.
You do still have to have a way to disconnect the PV output circuit from
the Classic in order to make that circuit dead from the Classic end of the
circuit. I did that by putting an MNPV6-disco on the power shed which
disconnects the PV output circuit as well as the 24VDC to the FireRaptors.
And, I am powering my FireRaptors at 15VDC and it works fine.

Brad Bassett, ret.




On Fri, Feb 16, 2024 at 6:47 PM Jeremy Rodriguez via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Has anyone successfully used a MidNite Classic CC to power a Tigo Rapid
> Shutdown Transmitter in an off grid setting ?  Specifically using the 12v
> Aux output to keep the PV circuits alive instead of relying on the inverter
> AC output to do this.
>
> Think of this scenario.  Batteries reach LBCO, inverter shuts OFF, no PV
> to re charge back to LBCI, no generator backup to recharge batteries.
>
>
> Jeremy Rodriguez
> Solar Installation / Design
> All Solar, Inc.
> 1453 M St.
> Penrose Colorado 81240
>
> Sent by Jeremy's iPhone. Sorry for typos and shorthand.
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Re: [RE-wrenches] Deka Duration

[Bradley Bassett via RE-wrenches]

Read the warranty. Very limited uses to maintain coverage. Mfg by an
Italian Co that is somewhat condescending toward customers. But of course
East Penn is good to work with. My understanding is that they do work with
the three phase Sol-Ark inverters.

Brad

On Wed, Feb 7, 2024 at 4:52 AM William Miller via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Pals:
>
>
>
> Anyone have any experience with this product, good or bad?
>
>
>
> https://www.mkbattery.com/products/energy-storage#deka
>
>
>
> We have had excellent results using their flooded and valve regulated
> lead-acid batteries.
>
>
>
> William
>
>
>
> Miller Solar
>
> 17395 Oak Road, Atascadero, CA 93422
>
> 805-438-5600
>
> www.millersolar.com
>
> CA Lic. 773985
>
>
>
>
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Re: [RE-wrenches] Schneider Rapid shutdown with 2023 compliance

[Bradley Bassett via RE-wrenches]

Note that the MPPT disco RS works only with Schneider charge controllers.
With any other charge controllers you'll need to use Fire Raptors.
Specifically the power line type rsd do not work with classic cc.  I see no
reason why the Schneider units would not meet 2020 or 2023 codes.

On Mon, Jan 1, 2024, 1:10 PM Darryl Thayer via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> I had a some way similar experience I used fire raptor and added a relay
> to use Raptor signal to shutdown inverter.
>
> On Mon, Jan 1, 2024, 2:01 PM Mac Lewis via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> Hello Wrenches,
>>
>> I need to retrofit a Schneider XW+ system with a rapid shutdown system.
>> The owner purchased this equipment about 4-5 years ago but is trying to get
>> it past a *very *intense inspector.
>>
>> To me, it looks relatively straightforward to get NEC 2023 rapid shutdown
>> compliant using Tigo TS4AF, and adding Schneider's MPPT Disconnect RS and
>> external rapid shutdown initiator.  It's a little strange though because it
>> has 2017 NEC compliant all over the documentation but I believe we are good
>> through NEC 2023 because shutdown occurs at a module level and the
>> Disconnect RS can take care of arc-fault monitoring.
>>
>> Does anyone have any documentation for the MPPT Disconnect RS that
>> doesn't specifically call out (only) NEC 2017 compliant?
>>
>> Or if this is not a good approach and is not reliable, I would appreciate
>> your input as well.
>>
>> Cheers!
>>
>>
>>
>>
>> --
>>
>>
>>
>> Mac Lewis
>>
>> *"Yo solo sé que no sé nada." -Sócrates*
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Re: [RE-wrenches] Cable sizing for high current modules? NEC interpretation/guidance?

[Bradley Bassett via RE-wrenches]

Hi George, It's good to see you're still with REC.

I'd assume this would fall under the purview of UL rather than NEC.
Anything that meets UL will pass NEC. With temperature derates I think
you'd have had to go to larger wire long ago to meet NEC standards.

It might be good to go to a larger wire to keep V drop low.

Brad Bassett
retired, but still interested.

On Wed, Nov 8, 2023 at 9:07 AM George McClellan via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Team;
>
>
>
> With the move to larger cells, some modules have an Isc that is pushing
> the limits of 12 AWG wire.  If I apply the rule of 156% (or 125% solar
> derate*125% continuous load derate) to an 18 Amp Isc module this will
> exceed the 25A that a 12 AWG wire can carry.  I understand that the
> homeruns will need to be a larger AWG (10 ga), but do the solar module
> cables (from junction box to MC4) also need to be larger?  Any guidance or
> reference material would be greatly appreciated.
>
>
>
> Thx,
>
>
>
> George McClellan | Senior Technical Sales Manager | REC Americas LLC
>
> 330 James Way Ste 150 | Pismo Beach, CA 93449 | USA
>
> Cell phone +1 805 704 3226 | Fax +1 805 357 6104
>
> www.recgroup.com | george.mcclel...@recgroup.com
> 
>
>
>
> --
>
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[RE-wrenches] APsmart and charge controllers

[Bradley Bassett via RE-wrenches]

I had a talk with tech support at APS about using the APSmart RSD devices
in my DC coupled system. I found it hard to understand him so I'm not
completely clear on what he said. One thing was clear and that is they do
not test these for use with charge controllers, so can't support that use.
Other than that I think he said that they require a certain amount of
resistance on the power lines to stay powered up. He said that it would not
likely stay powered up when connected directly to a battery bank, and would
not stay powered up on an open circuit.

What I ran into using 2 strings of 4 modules in series is in low light they
would turn on, voltage would rise to open circuit voltage, then collapse
back to 0. The charge controller would turn on when the voltage rose and
turn off when the voltage fell. Repeat over and over.  When full sun was on
the array it would stay connected, but operated at a voltage indicating one
each APS was not turned on in each string.

I now have Fireraptors on the array which of course works fine. But what a
lot of wire to deal with. Also note that the Fireraptors work fine powered
up with 15 volts instead of the specified 24 volts.

Has anyone successfully used these with any charge controllers?

 Brad Bassett
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Re: [RE-wrenches] Off Grid, Cloudy Days, Solar Tilt Question

[Bradley Bassett via RE-wrenches]

Jay,

I don't really remember, it was years ago that I had that setup, and did
not have any way to keep records except on paper which I did not do.

Brad

On Wed, Oct 25, 2023 at 6:07 PM Jay via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Hi Brad
>
> Out of curiosity, what is the actual difference between the two on those
> cloudy days.
>
> Thx
> Jay
>
>
>
> On Oct 25, 2023, at 5:04 PM, Bradley Bassett via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
> 
> I used to have both an array at a 60° tilt and one at 14° tilt. In the
> winter the high tilt array did better on sunny days, and on cloudy days the
> shallow array did better. They were different modules and different sized
> arrays, so without more analysis than I did, it would be hard to tell which
> is better through the winter, but it looked like they were similar in
> overall output. However, once March rolled around the steeper array started
> to do much better (more sun), and by summer the shallow array did much
> better. I'm at 47° N and I think if I had a choice of any tilt, but without
> adjustability, I'd probably set it at latitude or therabouts. If you're
> west of the mountains you're probably going to need another source of power
> anyway. I say that, but judging from the modelling I did of the output of
> my micro-inverter system it might just be possible to get through the
> winter with an array 500% overisized. And that with only 2 or 3 days of
> battery autonomy. This was surprising to me. Do keep in mind that an array
> with snow on it has 0 output.
>
> Brad Bassett
>
> On Wed, Oct 25, 2023 at 3:47 PM Kirk Bailey via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> Hi All!
>>
>>
>> We don't do a lot of pure off-grid systems and I recently ran across
>> something I wanted to run by folks with more experience in this area:
>> Optimal array tilt for our very cloudy PNW winters!
>>
>> My understanding has always been that latitude plus 10-15 degrees was the
>> best tilt to address our winter energy shortage. However a paper I recently
>> read (1), makes a compelling case for a much shallower tilt in situations
>> where the cloud cover is so heavy that "diffuse" solar radiation is all
>> that makes it through. They indicate that under those conditions a
>> horizontal array will produce significantly more energy than even a
>> two-axis tracker!
>>
>> Given that the challenge in our off-grid setups always seems to be making
>> it through the really cloudy stretches, and that there is usually enough
>> energy the rest of the time, should we be installing off-grid arrays at a
>> shallower angle?
>>
>> Anyone tried this?
>>
>>
>> Kirk Bailey
>>
>> k...@abundantsolar.com
>>
>> www.abundantsolar.com
>>
>>
>> (1) Kelly, N.A., Gibson, T.L, 2011, Increasing the solar photovoltaic
>> energy capture on sunny and cloudy days. Solar Energy 85, 111-125.
>>
>>
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Re: [RE-wrenches] Off Grid, Cloudy Days, Solar Tilt Question

[Bradley Bassett via RE-wrenches]

I used to have both an array at a 60° tilt and one at 14° tilt. In the
winter the high tilt array did better on sunny days, and on cloudy days the
shallow array did better. They were different modules and different sized
arrays, so without more analysis than I did, it would be hard to tell which
is better through the winter, but it looked like they were similar in
overall output. However, once March rolled around the steeper array started
to do much better (more sun), and by summer the shallow array did much
better. I'm at 47° N and I think if I had a choice of any tilt, but without
adjustability, I'd probably set it at latitude or therabouts. If you're
west of the mountains you're probably going to need another source of power
anyway. I say that, but judging from the modelling I did of the output of
my micro-inverter system it might just be possible to get through the
winter with an array 500% overisized. And that with only 2 or 3 days of
battery autonomy. This was surprising to me. Do keep in mind that an array
with snow on it has 0 output.

Brad Bassett

On Wed, Oct 25, 2023 at 3:47 PM Kirk Bailey via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Hi All!
>
>
> We don't do a lot of pure off-grid systems and I recently ran across
> something I wanted to run by folks with more experience in this area:
> Optimal array tilt for our very cloudy PNW winters!
>
> My understanding has always been that latitude plus 10-15 degrees was the
> best tilt to address our winter energy shortage. However a paper I recently
> read (1), makes a compelling case for a much shallower tilt in situations
> where the cloud cover is so heavy that "diffuse" solar radiation is all
> that makes it through. They indicate that under those conditions a
> horizontal array will produce significantly more energy than even a
> two-axis tracker!
>
> Given that the challenge in our off-grid setups always seems to be making
> it through the really cloudy stretches, and that there is usually enough
> energy the rest of the time, should we be installing off-grid arrays at a
> shallower angle?
>
> Anyone tried this?
>
>
> Kirk Bailey
>
> k...@abundantsolar.com
>
> www.abundantsolar.com
>
>
> (1) Kelly, N.A., Gibson, T.L, 2011, Increasing the solar photovoltaic
> energy capture on sunny and cloudy days. Solar Energy 85, 111-125.
>
>
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Re: [RE-wrenches] Hawaiian Tie in

[Bradley Bassett via RE-wrenches]

I have no experience with the Hawaii connection, but another choice for a
tap connector is the Ilso GTA type with cover. You don't have to cut the
tapped line and don't rely on piercing it.

Brad Bassett

Application Engineer (ret.) 1985 Solar Eng Svcs -> Applied Power -> Applied
Power (Idaho Power)(incl: SES, AscensionTech, Alt Energy Eng)-> Schott
Applied Power-> 2003 AEE Solar-> AEE Solar (Mainstream Energy)-> AEE Solar
(Sunrun) 2023

On Tue, Aug 8, 2023 at 8:11 AM Dana Orzel via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Oh Wise folks!
>
> Attached is a wire schematic please review. & feel free to possibly use
> for yourself in the future.
>
> I am in a bind with an interconnection where I have an apartment 6 pack
> meter  box with all 120-240v/100 amp breakers & assumed 100 amp busbars.
> The apts. were a mid 1970's original build.  There are 4 apartment with 1
> circuit/meter each & 1 house circuit/ meter for owners use.The breaker
> boxes are Sylvania (yuck). Originally I assumed a larger busbar due to 6 -
> 100 amp breakers & this was not the case. We all know about assuming...
>
> I consulted with W-2 who had assisted my lead installer in in the past
> from UT. He sent the following & though it makes sense to me, the utility
> is asking how I can have a 225 amp panel behind a 100 amp breaker. My
> response was that all we are doing is  achieving a properly sized bus bar
> to accommodate the back feed.
>
> My Utility Idaho Power requires  interconnection with a meter that has a
> load on it. Solar only meters are not allowed. This is for the owners loads
> only & he has 1 meter per apt complex at 100amps each.
>
> I am wondering if any of you have used this connection adaption to achieve
> a larger array connection & how it went?
> --
> Dana Orzel Great Solar Works, Inc. C - 208.721.7003 d...@solarwork.com
> Idaho Contractor - # 028765 Idaho PV # 028374 "Responsible Technologies for
> Responsible People since 1988"
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Re: [RE-wrenches] Parallel Homegrid Stack'd Busbar

[Bradley Bassett via RE-wrenches]

Note that MidNite now also makes 2000A and 500A versions of their BCB. With
two Sol-Ark 15k you do need to use the 1000A version with 275A each
inverter. I can also confirm that you do need to use both of the battery
terminals in the Sol-Ark 15k for full power, or the Homegrid bus bars that
Jason shows.

Brad Bassett


On Thu, Jun 29, 2023 at 6:57 AM Jason Szumlanski via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Lloyd,
>
> Homegrid makes a busbar to combine the two terminals in the Sol-Ark 15k so
> it can accept a single 4/0 cable and retain the full output capacity.
> Apparently, Homegrid is the only battery on the market with the output
> capacity to do this.
>
> https://www.homegridenergy.com/stackd-series
> 
>
> Jason Szumlanski
> Principal Solar Designer | Florida Solar Design Group
> NABCEP Certified Solar Professional (PVIP)
> Florida State Certified Solar Contractor CVC56956
>
>
> On Thu, Jun 29, 2023 at 9:43 AM Lloyd Hoffstatter via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> Hi Maverick,
>>
>>
>>
>> Per tech support, you need to buss battery output(s) to both input
>> breakers to get the full 275 Amp output.
>>
>>
>>
>> Best regards,
>>
>> Lloyd
>>
>>
>>
>> Lloyd Hoffstatter, M.S. Applied Solar Energy
>>
>> NABCEP Inaugural Certified PV Installer Emeritus
>>
>> Director, Sunstruck Consulting
>>
>> ll...@sunstruckconsulting.com
>>
>> 845-657-8132 (office)
>>
>> 914-844-3404 (mobile)
>>
>>
>>
>> *From: *Mac Lewis via RE-wrenches 
>> *Sent: *Thursday, June 29, 2023 8:27 AM
>> *To: *RE-wrenches 
>> *Cc: *Mac Lewis 
>> *Subject: *Re: [RE-wrenches] Parallel Homegrid Stack'd Busbar
>>
>>
>>
>> Hi Jason,
>>
>>
>>
>> The Sol-Ark 15k has dual battery input terminals so they can be combined
>> right inside.  This could be a good option to consider.
>>
>>
>>
>> Thanks
>>
>>
>>
>>
>>
>> On Thu, Jun 29, 2023 at 6:17 AM Maverick Brown via RE-wrenches <
>> re-wrenches@lists.re-wrenches.org> wrote:
>>
>> I recommend the Victron Lynx Power In or the Lynx Distributor.
>>
>> Thank you,
>>
>>
>>
>> Maverick
>>
>>
>>
>>
>>
>> On Jun 29, 2023, at 6:55 AM, Jason Szumlanski via RE-wrenches <
>> re-wrenches@lists.re-wrenches.org> wrote:
>>
>> 
>>
>> Hi all,
>>
>>
>>
>> I'm doing my first installation with two 24 kWh Homegrid stacks. They
>> will feed two Sol-Ark 15k. I'm seeking recommendations on busbars for
>> connecting this up in the most elegant way possible.
>>
>>
>>
>> Pictures speak 1,000 words, so if you have any I would appreciate it
>> (off-list is fine).
>>
>>
>>
>> Jason Szumlanski
>>
>> Florida Solar Design Group
>>
>>
>>
>>
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Re: [RE-wrenches] Magnum Energy ME-AGS-S

[Bradley Bassett via RE-wrenches]

AEE might still have some of those if I remember

Brad.
Retired

On Thu, Jun 15, 2023, 7:41 AM Chris Daum via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Hi folks:
>
>
>
> Any chance one of you has this auto gen start module they can part with?  I
> do NOT need the one with the network option…those are readily available.  
> Please
> contact me off list if you have one.
>
>
>
> Best,
>
>
>
> Chris Daum
>
> Oasis Montana Inc.
>
> 406-777-4309
>
> 406-777-4309 fax
>
> www.oasismontana.com
>
>
>
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Re: [RE-wrenches] Tech Support Issues with Sensata

[Bradley Bassett via RE-wrenches]

Just so you know, AEE Solar still has a bunch of Magnum panels and
controls, no inverters, no support though. At least until they find someone
to take it all. Keep an eye out for other close out stuff too. But, yes
they are still going and working on getting better.

Brad Bassett
Retired---
1985 Solar Engineering Services->Applied Power->Schott Applied Power->AEE
Solar->AEE Solar (Mainstream Energy)->AEE Solar (Sunrun) 2023

On Wed, May 31, 2023 at 12:29 PM Rich Nicol via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Magnum has been difficult that last 3 years – we currently multiple
> inverters that are down needing boards for repair that can’t be obtained.
> It appears stock of new inverters is just starting to trickle back into
> suppliers so we hope to see parts soon.
>
> It seemed Magnum quality took also took a hit when purchased by Sensata
> and I think operations were moved to a new location? – we found MMP’s
> shipped with missing parts etc. The best tech support engineer they had
> went to Outback, but then was lost tragically to complications from Covid.
>
>
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
> Behalf Of *Ray Walters via RE-wrenches
> *Sent:* Wednesday, May 31, 2023 1:51 PM
> *To:* re-wrenches@lists.re-wrenches.org
> *Cc:* Ray Walters
> *Subject:* Re: [RE-wrenches] Tech Support Issues with Sensata
>
>
>
> What were the issues?  I've not seen a Magnum have power quality troubles,
> but they are not the "grid" either.  My experience is that they are similar
> or a bit better than Outback, but certainly have measurable THD in the 4 to
> 5% range.  Its almost always finicky loads, and the inverter has always
> been within its tolerances, so I doubt you have an actual warranty issue.
> However, I have seen inverter output get strange after lightning damage,
> which is not covered under warranty either.
>
> You need a decent meter that can measure THD, and can capture the peak
> voltage of the waveform.  A good oscilloscope is even better, so you can
> see the waveform.
>
> Stuff like clocks not keeping time, or certain digital controls on certain
> appliances not functioning, is not a warranty claim.  Lights dimming, or
> LEDs flickering is not a warranty claim.  These are normal living off grid,
> and the only thing better than a Magnum for power quality is Exeltech in my
> experience.
>
> Ray Walters
> Remote Solar
>
> On 5/31/2023 11:37 AM, Chris Sparadeo via RE-wrenches wrote:
>
> Hi all,
>
>
>
> I have a client with a Magnum MS 4024- PAE inverter. There are some
> serious issues with power output quality and according to the client,
> another installer had started the RMA process while the inverter was still
> under warranty, however Sensata has not been responsive and has lost track
> of the case. They are asking for a new case to be initiated, but the
> inverter is now out of warranty. Has anyone out there had similar lack
> luster support issues with Sensata?
>
>
>
> Best,
>
>
>
> Chris
>
> --
>
> Chris Sparadeo
>
>
>
>
>
> C_802-369-4458
>
> H_802-728-3059
>
>
>
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Re: [RE-wrenches] Backwards compatibility Schneider

[Bradley Bassett via RE-wrenches]

I have an XW5548+ with Gateway and Discover AES battery and can vouch that it 
works slick. 

Brad
AEE Solar

Sent from my iPhone

> On Mar 29, 2023, at 9:26 AM, Dave Angelini Offgrid Solar via RE-wrenches 
>  wrote:
> 
> It will be some work to make this work right for you! The XWP is based on Soc 
> and or V. If you use the Schneider bat mon, it will be a settings guess for 
> Soc. You will have to do this yearly to compare BMS Soc to the input you set 
> for the bat mon.  I doubt you will get this to work closed loop unless you 
> use the discover AES and it's closed loop gear. (not xanbus). XW+ is missing 
> the memory and is V only, to communicate with Evault thru gateway. Check with 
> Fortress as I am using older info. They may have a way to use close loop 
> gateway with their product.
>  
> The easy way here is to use XWP and not have any of the settings fiasco. It 
> will charge Soc thru gateway to eVault BMS on canbus. Or use the Discover and 
> go all xanbus and super easy set-up.
>  
> Iron Edison also makes LFP and they may shed some light. Ask them if they can 
> close loop with Gateway and XW+
>  
> 
>  
> Dave Angelini Offgrid Solar
> "we go where powerlines don't"
> http://members.sti.net/offgridsolar/
> e-mail  offgridso...@sti.net
> text 209 813 0060
> 
> 
>> On 2023-03-28 8:07 pm, Mac Lewis via RE-wrenches wrote:
>> 
>> Hello Wrenches,
>>  
>> I have someone who would like to move away from Iron Edison batteries.  They 
>> want to go to Lithium, I'm thinking 2 x  eVault Max would be a good fit for 
>> them.  They have dual 5548 XW+ (not XW Pro) inverters with a Schneider 
>> Gateway device, 
>>  
>> I am curious if anyone has had issues/challenges trying to get closed loop 
>> communications to work with this set up.  If not, how about schneiders 
>> battery monitor with Lithium?
>>  
>> Thanks!
>> -- 
>>  
>>  
>>  
>> Mac Lewis
>> 
>> "Yo solo sé que no sé nada." -Sócrates
>> 
>> 
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Re: [RE-wrenches] Off Grid Battery Charging

[Bradley Bassett via RE-wrenches]

I tried this back in the 1970's with an exercise bike and a high efficiency
generator (still have this if anyone wants it). If I pushed hard I could
get it up to 200W, but only sustain about 100W. The only time I used it is
when my battery was depleted and I wanted to watch TV. I had a 12VDC 5" B
TV (so cute), so I would pedal like crazy during the commercials and it
would just make it to the next commercial. It was way too loud to do it
while watching. I eventually got a generator setup from Backwoods.

Brad

On Thu, Mar 16, 2023 at 3:11 PM Ray Walters via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> As I recall from pushing the "wayback" button, Backwoods and Real Goods
> used to sell something like that in the 90s.  I would only see a
> pyschological benefit, based on the system size. I recall that the
> charge rate was less than 50 watts, so its really not going to be worth
> wiring into the system.  Maybe she could do what several folks have
> done: power a TV while you pedal.  Anyway, here is device that might do
> it:   https://www.econvergence.net/
>
> Ray Walters
> Remote Solar
>
> On 3/16/2023 3:58 PM, Larry Brown via RE-wrenches wrote:
> > Wrenches
> >
> > I have a client that we did an off grid system for about 4 years ago
> > The system is performing well
> > The client would like to keep charged her batteries in the winter with
> her stationary bicycle operating a small generator
> > Right now she uses a grid connection that was available and she turns on
> a breaker if needed to charge the batteries in the winter through the
> inverter
> > When the batteries are fully charged she turns the breaker back off
> > No need for any back up other times of year
> > That is the only use of the grid
> >
> > Her request was to be off grid
> > This set up eliminated the need for her to have a generator for winter
> low light conditions
> > So far all is working as designed
> > But there is talk of adding a gas generator so that if the grid is down,
> there is a back up available
> >
> > The system has 16- AGM Concorde SunXtener Batteries configured in 2
> strings of 8 batteries per string
> > They are PVX 3050T 6 volt batteries operating at 48VDC
> > They are charged from the PV Array by 2- Schneider Conext MPPT 80 600
> Charge Controllers
> > The system has a Schneider Conext XW+ 5548 Single Inverter
> >
> > Any thoughts or ideas of what equipment can be matched with a stationary
> bicycle that might give a trickle charge to the battery bank
> > Anyone ever played with setting this up?
> > She wants to try this out and see what is possible
> > Get some winter exercise and perhaps keep the batteries as close to full
> without using the grid or a back up gas generator
> >
> > All suggestions welcome
> >
> > Thanks
> > Larry
> >
> > Larry Brown
> > Sun Mountain
> >
> >
> >
> >
> >
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Re: [RE-wrenches] absolyte GP battery question/ sideways mounting.

[Bradley Bassett via RE-wrenches]

I think the single cells are series 50 plates only. They are shorter so the
orientation is not as critical as the taller cells.

Brad

On Mon, Feb 20, 2023 at 2:18 PM Brian Mehalic  wrote:

> They do make a "single cell module" version that is upright, in a steel
> case, with the terminals on top; its top is a different color and
> dimensions than the front of the rack-mounted ones in their literature.
>
> Brian Mehalic
> NABCEP Certified Solar PV Installation Professional™ R031508-59
> National Electrical Code® CMP-4 Member
> (520) 204-6639
>
> Solar Energy International
> http://www.solarenergy.org
>
>
>
> On Mon, Feb 20, 2023 at 3:13 PM Bradley Bassett via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> Flat is the preferred orientation and they say that if installed with the
>> cells vertical it would lose some small percentage of capacity. They never
>> said anything about reduced life that I remember. It is very easy to have
>> short life on these if not fully charged very often. The will sulphate very
>> easily.  Also quality is not what it had been.
>>
>>  Brad
>>
>>
>> Sent from my iPhone
>>
>> > On Feb 20, 2023, at 1:43 PM, jay via RE-wrenches <
>> re-wrenches@lists.re-wrenches.org> wrote:
>> >
>> > HI All,
>> >
>> > I was just contacted by someone who has a 6 yr old absolyte GP 100G33
>> battery that has lost a lot of capacity.
>> >
>> > The manual only lists a horizontal install, but this was installed on
>> its side which I”m guessing was due to space issues.
>> >
>> > I am thinking that isn’t good for it, but hopefully someone actually
>> knows if this is bad for it or not.
>> >
>> > I have only seen pictures but am just trying to inform myself before I
>> head out.  Its also possible that the settings are incorrect which could be
>> the cause as well.
>> >
>> > Thanks in advance
>> >
>> > jay
>> >
>> >
>> > ___
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Re: [RE-wrenches] absolyte GP battery question/ sideways mounting.

[Bradley Bassett via RE-wrenches]

Flat is the preferred orientation and they say that if installed with the cells 
vertical it would lose some small percentage of capacity. They never said 
anything about reduced life that I remember. It is very easy to have short life 
on these if not fully charged very often. The will sulphate very easily.  Also 
quality is not what it had been. 

 Brad


Sent from my iPhone

> On Feb 20, 2023, at 1:43 PM, jay via RE-wrenches 
>  wrote:
> 
> HI All,
> 
> I was just contacted by someone who has a 6 yr old absolyte GP 100G33 battery 
> that has lost a lot of capacity.  
> 
> The manual only lists a horizontal install, but this was installed on its 
> side which I”m guessing was due to space issues.
> 
> I am thinking that isn’t good for it, but hopefully someone actually knows if 
> this is bad for it or not.
> 
> I have only seen pictures but am just trying to inform myself before I head 
> out.  Its also possible that the settings are incorrect which could be the 
> cause as well.
> 
> Thanks in advance
> 
> jay
> 
> 
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Re: [RE-wrenches] [EXTERNAL] Solark-Fortress Com? (was Fortress Battery Heater)

[Bradley Bassett via RE-wrenches]

That is with Discover batteries. 

Sent from my iPhone

> On Feb 10, 2023, at 8:34 AM, Dave Angelini Offgrid Solar via RE-wrenches 
>  wrote:
> 
> Agree Will and adding that for generator users closed loop will save 25% or 
> more on fuel.
>  
> I know alot of you folks do not use Schneider but it is so easy to close loop 
> for offgrid. You just plug Xanbus into one battery and the whole group gets 
> closed loop charged and discharged by XW and its chargers. It is the only 
> Battery that does this with Schneider xanbus.
>  
> No data to enter! Ever! Been using this since just after the 48 V LG failed 
> beta testing with Schneider in 2017.
>  
> Dave Angelini Offgrid Solar
> "we go where powerlines don't"
> http://members.sti.net/offgridsolar/
> e-mail  offgridso...@sti.net
> text 209 813 0060
> 
> 
>> On 2023-02-10 5:15 am, White, Will via RE-wrenches wrote:
>> 
>> Ray,
>> 
>>  
>> 
>> I can't speak to the Fortress product, but Discover will do what they call 
>> "dynamic charging" in closed-loop installations. Basically, the BMS will 
>> tell the power electronics how to charge the battery, which will lead to a 
>> better charging cycle. For example, if the batteries are discharged, and 
>> their cell temperature is low, the BMS will push the charging voltage above 
>> what the recommended setting would be in an open loop setup.
>> 
>>  
>> 
>> I saw David Norman give a presentation about this topic at the NABCEP 
>> conference last year. It was very insightful.
>> 
>>  
>> 
>> Here's a short article about it: 
>> https://blog.discoverbattery.com/benefits-of-closed-loop-charging-with-lynk
>> 
>>  
>> 
>> Thanks,
>> 
>> Will
>> 
>>  
>> 
>>  
>> 
>> From: RE-wrenches  On Behalf Of 
>> Ray Walters via RE-wrenches
>> Sent: Thursday, February 9, 2023 5:35 PM
>> To: re-wrenches@lists.re-wrenches.org
>> Cc: Ray Walters 
>> Subject: [EXTERNAL] [RE-wrenches] Solark-Fortress Com? (was Fortress Battery 
>> Heater)
>> 
>>  
>> 
>> CAUTION: This email originated from outside of the organization. Do not 
>> click links or open attachments unless you recognize the sender and know the 
>> content is safe.
>> 
>> 
>> 
>> Hi Chris;
>> 
>> That's not for the eVault.  Other Wrenches have mentioned using a pet 
>> heating pad with a 120 vac plug in thermostat.  I'm going to try that, I'll 
>> report back to the list what I find.
>> 
>> Secondly, I am having issues figuring out how to do the closed loop coms.  
>> The Fortress instructions contradict themselves on how to even make up the 
>> proper CANbus cable, as apparently MODbus is not stable anymore, after the 
>> latest Solark firmware upgrades.  I'm about to just apply the KISSbus,  
>> which is to blow off the closed loop com all together, and Keep It Simple 
>> S#@$%!, otherwise known as No Coms at all. 
>> 
>> I've screwed with Com stuff since the 90s, but usually been disappointed, to 
>> downright horrified with the final results.  Somebody explain to me like a 2 
>> year old again, why closed loop is so much better?  Think off grid, where 
>> reliability is 10 times more important than squeezing an extra 5% capacity 
>> out of the battery Notes in the online instructions such as "Failure to 
>> properly upgrade the firmware may cause the battery to stop working!",   are 
>> not making we want to push ahead with closed loop either.
>> 
>> Ray
>> 
>> On 2/9/2023 11:01 AM, Chris Schaefer via RE-wrenches wrote:
>> 
>> Ray,
>> 
>>  
>> 
>> I'd suggest reaching out to the Fortress techie's as they just introduced a 
>> heater product for their enclosure products. While I don't believe they have 
>> a unit specif to the eVault but you should be able to make it work.
>> 
>>  
>> 
>> Christopher
>> 
>>  
>> 
>> On Wed, Feb 8, 2023 at 6:43 PM Jerry Shafer via RE-wrenches 
>>  wrote:
>> 
>> Pet heater have worked for me, I air gap a sealed heater box under the 
>> battery, thermostat inside the top of the battery.  It's slow and low power 
>> but does the trick
>> 
>> Fun times
>> 
>>  
>> 
>> On Wed, Feb 8, 2023, 3:05 PM Ray Walters via RE-wrenches 
>>  wrote:
>> 
>> Hi All;
>> 
>> I have a fresh Fortress Evault installation with a Solark inverter.  The 
>> batteries are indoors in the center of the house, but the customer is 
>> not there full time, so the battery is unfortunately going below 
>> freezing.  What are the best options for setting up a heating system for 
>> the E Vault?
>> 
>> Here are ideas that I have not tried, but am considering:
>> 1) add a 240 v, 1000 w baseboard heater in the room near the battery 
>> that is wired to only run off the generator.  Run the generator until 
>> the heat comes up, and then hopefully after 30 minutes, the battery 
>> would begin accepting a charge.
>> 
>> 2) Add an 120 vac heating blanket under the evault that would be wired 
>> to a thermostat, but also have a relay control from the PV system, so 
>> that the heater would only operate when the sun was out, and the battery 
>> was below 50F.   I don't quite know 

Re: [RE-wrenches] Remote battery disconnects

[Bradley Bassett via RE-wrenches]

My design for one customer was to have one initiator for the PV and
inverter, and a separate one for the battery initiator. And, to put up a
plaque giving instructions to turn off the PV and inverter first, then the
battery.

Brad

On Sat, Jan 28, 2023 at 4:22 PM William Miller via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Esteemed wrenches:
>
> Well if my house is on fire and the entry of fire responders is delayed
> for lack of a disconnect, I choose having the disconnect. I can worry about
> the charge controllers later.
>
> Others may prioritize their charge controller over their homes…
>
> Put a cable-tie lock in the closed position to discourage kids from
> messing with it. Test it only after dark.
>
> William
>
> On Sat, Jan 28, 2023 at 2:32 PM William Bryce <
> wlbr...@pineridgeproducts.com> wrote:
>
>> All
>>
>> One thing that no one is talking about is what happens to the MPPT charge
>> controllers when the Battery Disconnect trips when the charge controllers
>> are under full load.
>> Many will blow up. Try turning off the battery breaker on a SolaArk  when
>> the charge controllers are maxed, and see if you get lucky.
>>
>> On Sat, Jan 28, 2023 at 3:27 PM William Miller via RE-wrenches <
>> re-wrenches@lists.re-wrenches.org> wrote:
>>
>>> Jeremy:
>>>
>>>
>>>
>>> Thanks for posting the code references for those that had never looked
>>> them up.
>>>
>>>
>>>
>>> Chris:
>>>
>>>
>>>
>>> What do you mean by “a disconnect for AC wiring, not specific to which
>>> or both panel types”?
>>>
>>>
>>>
>>> All:
>>>
>>>
>>>
>>> Code references are handy when receiving edicts from building officials,
>>> but not required, IMHO, for two reasons:  The contractor should already be
>>> versed in the codes and, building departments can mandate their own
>>> requirements above and beyond the code.
>>>
>>>
>>>
>>> It may seem redundant to require an AC disconnect for premise wiring as
>>> well as a DC battery disconnect.  In most cases if you disconnect the
>>> inverter from the batteries the AC power goes off.  However if the
>>> generator is running at the time, some battery inverters can operate when
>>> disconnected from batteries.  So to completely de-energize all components
>>> of an off-grid home you need to disconnect the generator and the battery
>>> leads.
>>>
>>>
>>>
>>> In this case the home is required to have fire sprinklers.  There is
>>> pressure pump to provide flow to these fire sprinklers-- said pump being
>>> powered by the inverter/battery system.  I am going to apply for a waiver
>>> to remove the DC disconnect requirement on the grounds that the pressure
>>> pump is essential fire suppression equipment.  Instead I will propose to
>>> supply an AC disconnect (meeting all requirements for accessibility and
>>> marking) that will disconnect all premise wiring except the pressure pump.
>>>
>>>
>>>
>>> By the way, I will of course be trying to apply the logic that the
>>> voltage specification is for nominal battery voltage and this project
>>> having a nominal 48 volt bank does not require the battery disconnect.
>>>
>>>
>>>
>>> I will let the group know what response I receive.  Regardless of how
>>> this works in this jurisdiction, I think these are both valid arguments
>>> worth trying in any jurisdiction requiring the battery disconnect.  Some
>>> officials are amenable to dialog and negotiation and some are less so.
>>>
>>>
>>>
>>>
>>>
>>> William Miller
>>>
>>>
>>>
>>> Miller Solar
>>>
>>> 17395 Oak Road, Atascadero, CA 93422
>>>
>>> 805-438-5600
>>>
>>> www.millersolar.com
>>>
>>> CA Lic. 773985
>>>
>>>
>>>
>>>
>>>
>>> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
>>> Behalf Of *Jeremy Rodriguez via RE-wrenches
>>> *Sent:* Saturday, January 28, 2023 10:12 AM
>>> *To:* cwar...@entech-engineering.com; RE-wrenches
>>> *Cc:* Jeremy Rodriguez
>>> *Subject:* Re: [RE-wrenches] Remote battery disconnects
>>>
>>>
>>>
>>> 
>>>
>>> *2020 Code Language:*
>>>
>>> *480.7 DC Disconnect Methods.*
>>>
>>> *(A) Disconnecting Means.* *A disconnecting means shall be provided for
>>> all ungrounded conductors derived from a stationary battery system with a
>>> voltage over 60 volts dc. A disconnecting means shall be readily accessible
>>> and located within sight of the battery system.*
>>>
>>> *N* *(B) Emergency Disconnect.* *For one-family and two-family
>>> dwellings, a disconnecting means or its remote control for a stationary
>>> battery system shall be located at a readily accessible location outside
>>> the building for emergency use. The disconnect shall be labeled “EMERGENCY
>>> DISCONNECT”.*
>>>
>>> *N **(C) Disconnection of Series Battery Circuits.* *Battery circuits
>>> exceeding 240 volts dc nominal between conductors or to ground and subject
>>> to field servicing shall have provisions to disconnect the series-connected
>>> strings into segments not exceeding 240 volts dc nominal for maintenance by
>>> qualified persons. Non-load-break bolted or 

Re: [RE-wrenches] Discover LiFe battery question

[Bradley Bassett via RE-wrenches]

It’s not required but it has the only reliable means of generator start stop.  
There are three relays that can be programmed. You can’t get accurate battery 
state of charge by using voltage except near empty or full. The LynkII also has 
a little bar graph showing state of charge to the nearest 10%. Unfortunately it 
does not connect to a LAN yet. 

Sent from my iPhone

> On Jan 10, 2023, at 10:06 AM, Jeremy Rodriguez via RE-wrenches 
>  wrote:
> 
> Is the Lynx II gateway required for battery to battery comms?  
> Model 42-48-6650
> We will be installing with an inverter that cannot communicate. 
> 
> 
> 
> Jeremy Rodriguez 
> Solar Installation / Design
> All Solar, Inc.
> 1453 M St. 
> Penrose Colorado 81240
> 
> Sent by Jeremy's iPhone. Sorry for typos and shorthand. 
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Re: [RE-wrenches] 24V Multi Mode Inverter Options

[Bradley Bassett via RE-wrenches]

Samlex EVO4024 is supposed to be a very robust simple inverter. 120VAC
output, AC charging, good value.

Brad

On Tue, Jan 3, 2023 at 6:44 AM Chris Sparadeo via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Hey there,
>
> I have a client with a dead 24V Xantrex SW…It had a good 20+ year run with
> a few rebuilds. The customer is looking to upgrade their inverter, but keep
> their 24V battery bank. My first thoughts were Outback FX or Victron
> Quattro, but I am curious what others are using out there. It seems like
> 24V has been left in the dust with regards to more sophisticated multimode
> and hybrid inverters. Schnider makes a 24V SW but it has a short warranty
> and after a welded AC input relay I’m not a big fan of that model.
>
> Just wondering if I am missing any options out there?
>
> Kindly,
>
> Chris
> --
> Chris Sparadeo
>
>
> C_802-369-4458
> H_802-728-3059
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Re: [RE-wrenches] BACKUP system revival

[Bradley Bassett via RE-wrenches]

The Radian grid AC in is connected to the utility side of the transfer
switch. You may need a service rated fused disconnect on that line,
probably 60A. Then you can feed the AC out to the generator input on the
transfer switch to power the main house panel. It's best and usually
required by code (depending on UL1741 or UL9540) to use a manual transfer
switch or adequate load control, or total house loads that the Radian can
handle.  Getting the aux on the Radian to start/stop the generator involves
tracing the signal wires in the transfer switch (if automatic) and using
those.

Brad

On Sat, Dec 17, 2022 at 9:44 AM William Miller via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Dana:
>
> I have never incorporated a transfer switch with a battery inverter. The
> inverter’s internal transfer relay with the smarts it provides has always
> been preferred.
>
> I have of course used a transfer switch for generator-only systems. In
> some cases the generator is rated smaller than the utility feed and the
> user needs to live within the capabilities of the generator on the rare
> occasion when the utility is down.
>
> So your scenario brings up an interesting option: using a full 200 amp
> transfer switch means the Radian is not a 50 amp bottleneck when the
> utility is up. The Radian would become an ersatz generator connected to the
> gen input on the transfer switch.
>
> The wrinkle is: how do you provide an AC input to the Radian to charge
> batteries when the grid is up without triggering the transfer switch?
>
> When the Radian sees AC input it wants to through-transfer. There must be
> some way to configure the transfer switch to not trigger when the grid is
> up. Then a breaker from the main panel feeds the Radian, the Radian charges
> batteries and the Radian output goes nowhere.
>
> However when the grid does go down and the transfer happens you have a
> power flow loop which will shut down the Radian.
>
> I imagine there is some scheme of running the Radian input through a
> contractor that would be opened when the transfer switch connects the
> Radian output to the load. I think if you solve that you may have a working
> option. This does add a layer of complexity, however.
>
> Good luck.
>
> William Miller
>
> PS:  You could use an outboard battery charger, however that is a waste of
> the very good battery charger built into the Radian
>
> Wm
>
> On Sat, Dec 17, 2022 at 8:28 AM Dana Orzel via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> Hey All a Cheery Season to you all!
>>
>>
>>
>> I inherited a backup system that had “failed”. It was unwired, & poorly
>> labeled.
>>
>>
>>
>> 1200 AHR AGM Battery – 1 Radian 8KW inverter – 200 amp Generac transfer
>> switch – No solar - Feeding a 200 amp house panel.
>>
>>
>>
>> First I explained the there were too many loads for an 8KW inverter. It
>> could & may overload the 8KW inverter. They said “it had worked fine for 5
>> years & they were OK with it as is please get it back up”…
>>
>> Replaced the existing Eaton transfer switch as the Generac controller was
>> shot, with a Generac 200 amp Xfer switch complete with controller &
>> transfer switch.
>>
>> Rewired & had to recharge the 48 volt battery from 20volt back up to full
>> with a pair of IOTA chargers in series.
>>
>>
>>
>> The original trigger was 3 wires from the Radian to the 12 volt & AUX
>> output to the input on the Generac controller. These were disconnected on
>> the Generac end. So no clue or labeling there.
>>
>>
>>
>> I called Outback & they called it Redneck engineering & send me a few
>> articles to read.
>>
>>
>>
>> Has anyone configured a backup in this manner?
>>
>>
>>
>> All suggestions appreciated, thanks & wishing you all a safe & sane
>> season!
>>
>>
>>
>>
>>
>>
>>
>> Dana Orzel  Great Solar Works, Inc.
>>
>> *C - 208.721.7003   d...@solarwork.com
>> *
>>
>> Idaho Contractor - # 028765 Idaho PV # 028374
>>
>> www.greatsolarworks.comwww.solarwor.com
>>
>> *"Responsible Technologies for Responsible People since 1988"  *
>>
>>
>>
>> *P* Please consider the environment before printing this email.
>>
>>
>>
>>
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> 

Re: [RE-wrenches] Sola-ark cold morning

[Bradley Bassett via RE-wrenches]

If they are the AES 48-6650 batteries I think they do *not* have low
temperature mode, and will be damaged if they are charged while they are
below freezing. The AES 48-3000 I think *do* have a low temperature mode
and would prevent charging if they are below freezing.

Wind will tend to make any object closer to the ambient temperature, unless
there is evaporation involved. So, if there is radiation to the sky making
the object colder, the wind will warm it. If there is solar radiation
making it warmer, wind will cool it off.  Warm animal bodies of course will
be cooled by wind if the ambient temperature is below body temperature, and
cooled even more by evaporation.

Brad

On Sun, Dec 4, 2022 at 7:01 AM Dana Orzel via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Dual - Discoverer LI battery bank not sure on battery mode setting
> (written down but cannot locate at the moment) & no backup generator. Very
> conservative & minimalist client.  I over designed past his energy load
> evaluation request on purpose as he did not want to have to use a
> generator.
>
> He has built the entire house off of 2 - small 12 volt PV systems &
> battery charging cordless tools. Living on site in the garage…
>
> I am very impressed with his commitment to low impact & not a wackadoodle
> or survivalist either. Excellent classical, bluegrass, & jazz cellist.
>
>
>
>
>
> *Dana Orzel -  E - d...@solarwork.com  -  C - 208.721.*
> *7003*
>
>
>
> *From:* RE-wrenches  *On
> Behalf Of *Mac Lewis via RE-wrenches
> *Sent:* Sunday, December 4, 2022 7:41 AM
> *To:* RE-wrenches 
> *Cc:* Mac Lewis 
> *Subject:* Re: [RE-wrenches] Sola-ark cold morning
>
>
>
> Hi Dana,
>
>
>
> What type of batteries?  What battery mode?
>
>
>
> If you have Lithium batteries with communication enabled, there are
> certain modes that the BMS is running the charging show.  I've seen the
> Sol-Ark throttle back charge as instructed by the BMS under these
> circumstances.
>
> A quick check of this would be to start the generator and see if it's on
> the battery management side or PV only side.
>
>
>
> It seems like you are way below the MPPT upper limit if Im looking at the
> correct QCell spec sheet.
>
>
>
> As far as the temperature theory.  You can have temps on surfaces below
> ambient.  This can happen in two ways that I am aware of: radiation and
> evaporation.  The radiation effect occurs because the cold night sky (very
> cold) is exchanging heat with a surface.  This is why you can get ice on
> lakes above 32F.  It's very complex to model this but I doubt you could
> come close to lowering the temperature far enough to drive the Voc out of
> the MPP range.
>
>
>
> Also, there will be competing heat exchange trying to drive that
> temperature back to ambient.  For example if you had a lot of wind in a
> clear cold night, the convection heat exchange from the wind would actually
> warm up the surface.
>
>
>
> Evaporation (or any phase change) can drop an object's temperature below
> ambient as well.  It will pull latent thermal energy from objects in order
> to change the phase of the molecules.  This actually has a stabilizing
> effect on temperature typically because it takes a lot of energy to change
> phase.  This is why people use large water barrels in greenhouses to
> release latent energy to prevent freezing.
>
>
>
> Please let us know what you find out.
>
>
>
> Thanks!
>
>
>
> On Sun, Dec 4, 2022 at 6:22 AM Dana Orzel via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
> Hey Now All Wise ones!
>
>
>
> An of gird client emailed yesterday that his Solark had been accepting
> only 350 watts of a 4KW input from the array. The modules are Q-cell 325
> watt 2 strings of 7 modules.
>
>
>
> Sunrise, full sun, no clouds so no edge of cloud effect, negative temps @
> -6˚F, he waited all day with no improvement or change in the charge rate
> consistent 350watts input & then same thing next morning. Negative temps &
> full sun & 350watts solar input.
>
>
>
> He turned the Solark off for 10 minutes & then turned it back on & 4KW
> charge input returned. The Solark did not turn off or deliver any alarm or
> warning.
>
>
>
> My initial thought was over-voltage spike, we designed for a -25˚F
> scenario & 110 PSF snow load. Beefy!
>
>
>
> I did not ask if it was windy additionally. Could this contribute to a
> colder array temp? I have always been of the impression that wind chill did
> not affect metal or glass that it has to do with moisture being driven off.
>
>
>
> Thoughts & suggestions?
>
>
>
>
>
>
>
> Dana Orzel  Great Solar Works, Inc.
>
> *C - 208.721.7003   d...@solarwork.com
> *
>
> Idaho Contractor - # 028765 Idaho PV # 028374
>
> www.greatsolarworks.comwww.solarwor.com
>
> *"Responsible Technologies for Responsible People since 1988"  *
>
>
>
> *P* Please consider the environment before printing this email.
>
>
>
>
>
> 

Re: [RE-wrenches] Low voltage lithiums

[Bradley Bassett via RE-wrenches]

On some LFP batteries the cell balancing only happens at full charge, so
you do need to get to full every so often. Discover AES is one that needs
this.

Brad

On Sat, Nov 19, 2022 at 10:10 AM Dana Orzel via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Another issue is what charge controller are you using? I know for me with
> Outback products I’ve had to switch from an FM 80 to the OB - FM 100 in
> order to have a more accurate high-voltage cut out voltage.
> The FM 100 has a much more accurate micro processor in it then the FM 60
> or 80 per Brad Bassett with AEE.
>
> Dana Orzel
> C: 208.721.7003
> E- d...@solarwork.com
>
> On Nov 19, 2022, at 7:15 AM, Jeff Clearwater via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
> Hi Kris
>
> What voltage do you have your charge settings at?
>
> I recommend that bulk or absorb voltage for lithium iron phosphate not be
> set above 56 V  - there is no reason for it even though many manufactures
> suggest higher settings.  In cases where total storage is sized
> generously enough I  often use 55.6 or even 55.4 in order to target 95% as
> full instead of 100% in order to extend cycle life.   and for float there’s
> no reason to ever go over 54 V and better maybe even to be in the mid-53s.
>
> See if that helps assuming you had it higher.
>
> The other thought is you have one bms that is perhaps not protecting
> overcharge  and allowing a temporary spike when the others do limit.
>
> Hope that helps!
>
> Best Jeff C.
> Village Power Design
>
>
>
> Sent from my iPhone
>
> On Nov 19, 2022, at 6:32 AM, Kristopher Schmid via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
> 
> Greetings all,
>
> I have seen an issue on two different systems that I am hoping someone can
> shed some light on for me.  One was a 48 volt pack of 12 volt Battle Bornes
> and the other was a 24 volt pack of SOKs.  What happens is when reaching
> the end of the bulk charging stage, the battery voltage spikes and sends
> the inverter into an overvoltage error.  Can anyone explain what is
> happening and a solution?
>
> Thanks,
> Kris
>
> Shine On!
>
> Kris Schmid
> Legacy Solar, LLC
> 137 West 1st Avenue
> Luck, WI 54853
> www.legacysolar.com
> 715-653-4295
> NABCEP Certified PV Installation Professional
> Licensed Wisconsin Master Electrician
> BSEE
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Re: [RE-wrenches] SolArk and Tigo compatibility

[Bradley Bassett via RE-wrenches]

The issue as I see it is that the Tigo RSS Transmitter and the APsmart
transmitter are both rated to draw up to 800ma. The 12VDC output of the
Sol-Ark inverters is limited to 100ma. Since some have used this
successfully I suppose that means that either these transmitters don't
really use more than 100ma, or the 12VDC output of the Sol-Ark can actually
handle more than that, or some combination of both. If I owned a Sol-Ark
I'd test this to see what the answer is, but alas I do not. I design
systems using a 48VDC to 12VDC power supply (Online Components has a
Mean-Well device for a reasonable price, sorry no link from here) and a
fairly rare IMO shutdown button (we have that) that has both NO and NC
contacts. This is needed because to shut down the Sol-Ark inverter requires
a NO contact that closes on initiation which is quite rare in RSD
initiators. And you do still need to shut down the inverter as well as the
RSD devices so that it does not continue to feed voltage back into the PV
circuits (I think). This also shuts down the AC output of the Sol-Ark which
tends to make the inspector happy. Since it also shuts down the inverter,
that limits the battery to its own circuits, does this count as a battery
disconnect also?? I'm seeing some inspectors calling out for battery
disconnects which is much more problematic.

Brad Bassett
AEE Solar

On Wed, Nov 16, 2022 at 4:27 PM Jerry Shafer via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Wrenches, Christopher
> I have done quite a few and per solark have always connected in the
> inverter with no issues, Now with that connecting to the output side it
> would do much the same work until it did not then shut off the modules.
> Fun times
>
> On Wed, Nov 16, 2022 at 6:33 AM Christopher Warfel via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> Hi, We are doing our first system with these two devices. The inverter is
>> SolArk 12P (mutimode) and the Tigo product for RS is the TS4F.  Tigo has me
>> a little bit walking in circles.
>>
>> I told them that SolArk says not to use the 12VDC RS output terminals for
>> connecting the transmitter.  I gave them the attached drawing which they
>> ask for, which shows the transmitter connected to a 120VAC/12VDC breaker
>> which they supply.  They told me to wire the 120VAC source to the main
>> service panel so the array would shut down on loss of power. I told them
>> that is exactly NOTwhat I wanted to happen as that would stop the battery
>> charging when there is a loss of utility power. I said I wanted the 120VAC
>> source to be the back up loads panel. After about a week of calls and
>> emails, I got an email back saying to use the SolArk 12VDC terminals for
>> RS.  I just emailed them a screen shot of the SolArk manual that says not
>> to do that.
>>
>> At this point, I am asking anyone on the list to let me know how they
>> wired the transmitter successfully. Thank you for any guidance, Chris Warfel
>>
>>
>>
>>
>>
>> --
>>  Christopher Warfel
>>  ENTECH Engineering, Inc.
>> PO Box 871, Block Island, RI 02807
>> 401-466-8978
>> 
>>
>>
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There are two list archives for 

Re: [RE-wrenches] HomeGrid batteries

[Bradley Bassett via RE-wrenches]

I'm curious what you consider mediocre about the HomeGrid?

Brad

On Mon, Oct 10, 2022 at 7:07 PM Lou Russo via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Aloha All,
>
> I am considering doing a job with one of these (14kWH) with a Sol-Ark 12kW
> for a client who is demanding them. Anyone have any recent experience with
> them?
> The price is good but all else is pretty mediocre.
>
> Aloha,
>
> Lou Russo
> (808) 345 6762
>
>
>
> On Thu, Aug 18, 2022 at 4:46 PM Jerry Shafer via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> The cycle life sounds good the warranty cycle for off grid is far less
>> than blue planet and fortress. If you compare the fortress x 2, 18.5's with
>> a better warranty it comes out cheaper. I do see a display but l only see
>> volts. Pretty low surge, is there US warranty administration?  Good luck,
>>
>> On Thu, Aug 18, 2022, 6:24 PM Kirpal via RE-wrenches <
>> re-wrenches@lists.re-wrenches.org> wrote:
>>
>>> Hi Yall!
>>> Anyone used HomeGrid batteries? We are just getting ready to pair them
>>> with some Outback and Sol Ark systems..  They have a compelling price, form
>>> and feature set.
>>> Hoping to hear of any issues before we jump in too deep with them..
>>> 100 thanks for any thoughts!
>>> Cheers.
>>> Kirpal
>>> Oregon Solarworks
>>>
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Re: [RE-wrenches] AC coupled grid tie only inverter

[Bradley Bassett via RE-wrenches]

The ACLD was long ago discontinued. The Morningstar relay driver would work
fine. I think Magnum limited the size of the grid tie inverter to 90% of
the Magnum inverter max power. So 3960W for a MS4448PAE.

Brad




On Sat, Oct 8, 2022 at 8:47 AM Jay via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Hi Drake
>
> I remembered that they make this product or they did.
>
>
> https://www.magnum-dimensions.com/sites/default/files/MagDocs/64-00062%20Rev%20A%20%28ACLD-40%29_web.pdf
>
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Re: [RE-wrenches] Samlex EVO series and AGS

[Bradley Bassett via RE-wrenches]

The EVO has an AUX contact closure, either NO or NC that can be programmed
for a two wire generator. If you need 3 or 4 wire start logic you can use
the Atkinson GSCM.

Brad

On Fri, Sep 2, 2022 at 9:30 PM frenergy via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Doesn't the EVO have that capability?
>
> Bill
>
> Feather River Solar Electric
> Bill Battagin, Owner
> 4291 Nelson St.
> Taylorsville, CA 95983
> 530.284.7849
> CA Lic 874049
> Solar Powered since 1982
>
>
> On 9/2/2022 7:51 PM, Jeremy Rodriguez via RE-wrenches wrote:
>
> Can anyone recommend a reliable AGS module that works well with the EVO
> series inverters?
>
> Jeremy Rodriguez
> Solar Installation / Design Expert
> All Solar, Inc.
> 1453 M St
> Penrose Colorado 81240
>
> Sent by Jeremy's iPhone. Sorry for typos and shorthand.
>
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Re: [RE-wrenches] solar panel recycling

[Bradley Bassett via RE-wrenches]

Matt Ferrell gives a good summary of the issues:

https://www.youtube.com/watch?v=3JqzSsStwF4

Brad

On Wed, Aug 17, 2022 at 5:55 AM jay via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Hi All,
>
> Some asked me a question about recycling of panels and I can’t exactly
> find out the answer.
>
> The companies here in the US that “recycle”.
> If I understand it right, they are:
>
> 1. removing the aluminum frames
>
> 2. grinding up the panels
>
> 3. removing the wires
>
> Then I don’t know what happens, do they go to China for melting down or?
>
> thanks in advance
>
> Jay
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Re: [RE-wrenches] EG4

[Bradley Bassett via RE-wrenches]

Check out YouTube videos by Will Prowse. He’s used them and taken them apart. 
It would be better if any wrenches have used them though 

Brad

Sent from my iPhone

> On Jul 28, 2022, at 12:49 PM, Dave Tedeyan via RE-wrenches 
>  wrote:
> 
> Hi all, 
> 
> Does anyone have any experience with EG4 products? I am doing an off-grid 
> consultation for someone who plans on getting EG4 inverter and lithium 
> batteries. The equipment seems so cheap, yet appears to be somewhat legit. 
> They do at least have UL1741 listing. But their 6500w inverter/charger also 
> takes PV power directly and goes for $1250. And their 48V 100AH battery is 
> only $1500. I am curious if anyone has used this stuff and if it is actually 
> legit.
> 
> Cheers,
> Dave
> 
> -- 
>   
> Dave Tedeyan, P.E.
> Owner | Sungineer Solar
> p: he | him | his
> a: 1653 Slaterville Rd. | Ithaca, NY 14850
> w: www.sungineersolar.com
> c: (607) 288-2898
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Re: [RE-wrenches] Magnum Inverters

[Bradley Bassett via RE-wrenches]

The Samlex EVO4248SP is a potential substitute. The only system panel is the 
MidNite E-panel. This is a 4.2 kW split phase inverter. 

Brad
AEE Solar

Sent from my iPhone

> On Jul 20, 2022, at 1:25 PM, Ron Young via RE-wrenches 
>  wrote:
> 
> I have been waiting literally months for delivery of 4024 and 4448 PAE 
> inverters both this year and 2021. It seems Magnum has dropped through the 
> cracks in the floorboards. My supplier, the largest in Canada, has no idea of 
> future shipments, they just show up without advance notice. I think Magnum is 
> in trouble.
> 
> Ron Young
> earthRight Solar - Solareagle.com
> 
>> On Jul 20, 2022, at 8:08 AM, Luke Christy via RE-wrenches 
>>  wrote:
>> 
>> Hi Jeremy,
>> Check with Zonna Energy in PA. I use them for almost all of my off-grid 
>> equipment now and have been very happy with the service and pricing. They 
>> normally stock Magnum equipment but I have not checked on inverters in a 
>> while. 
>> 
>> 
>> Luke Christy
>> 719-588-3044
>> sgsrenewab...@gmail.com
>> 
>> 
>>> On Jul 20, 2022, at 5:29 AM, Jeremy Rodriguez via RE-wrenches 
>>>  wrote:
>>> 
>>> Does anyone have a source these days for Magnum Energy Inverters? 
>>> Contact me off list if needed. 
>>> 
>>> 
>>> 
>>> Jeremy Rodriguez 
>>> Solar Installation / Design Expert 
>>> All Solar, Inc.
>>> 1453 M St
>>> Penrose Colorado 81240
>>> 
>>> Sent by Jeremy's iPhone. Sorry for typos and shorthand. 
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Re: [RE-wrenches] Schneider XW MPPT 80/600 rapid shut down

[Bradley Bassett via RE-wrenches]

The Schneider RSD switch has a Tigo transmitter, which is no longer SunSpec
compliant. SunSpec devices do NOT work. I know for certain that the APsmart
devices do not work.

Fire Raptors are very robust and might be a good choice for off grid where
reliability is paramount. But they come with 6ft cables for both control
and string wires so you have to figure out what to do with all that nest of
wire under the array. And you have to have a 24VC power source up to the
roof to power them. The manual shows one FireRaptor for two modules, but
unless you have very low voltage modules that is not going to meet code.
One for each module is required to stay under the 80 VDC limit.

Brad

On Tue, Apr 19, 2022 at 3:06 PM Jerry Shafer via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> You may want to look at fire raptor as a RSD option.
> Jerry
>
> On Tue, Apr 19, 2022, 9:42 AM jay via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> HI All
>>
>> I’ve got a project coming up that has specified a Schneider XW 80/600
>> controller.
>>
>> Its going to need RS.
>>
>> Is the only product still the Tigo TS4-A-F?
>>
>> thanks
>>
>> jay
>>
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Re: [RE-wrenches] Schneider XW MPPT 80/600 rapid shut down

[Bradley Bassett via RE-wrenches]

AFAIK Or any of the variants of that like the dual input unit 

Brad

Sent from my iPhone

> On Apr 19, 2022, at 9:18 AM, jay via RE-wrenches 
>  wrote:
> 
> HI All
> 
> I’ve got a project coming up that has specified a Schneider XW 80/600 
> controller.
> 
> Its going to need RS.
> 
> Is the only product still the Tigo TS4-A-F?
> 
> thanks
> 
> jay
> 
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