Re: [RE-wrenches] High current dc combiner vibration

[Jerry Shafer via RE-wrenches]

Kirk
As the batteries come up to charge does the vibration subside. Are the
battery cables spun together "corkscrew like" l have seen this correct DC
noise. I have an 8 on 8 just like your 10 and l have no noise at all, mine
come in from each side of the battery combiner, how is your install
configured, how is the cable length same close or very short to very long
some length is better on FLA's due to resistance under load and charge.
More information may help with a solution.
Fun times solar
NABCEP PV Inspector

On Thu, Jun 29, 2023, 8:19 AM Kirk Herander via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> All,
>
> I am in the middle of commissioning a 480kwh BP LFP battery bank,
> connected to -10- OB Radian 8kw inverter/chargers.
>
> For the DC combiner I am using midnite 2000 amp combiner boxes, modified
> to mount  class T fuses on the positive bus, for both battery inputs and
> inverter outputs.
>
> For starters, I set the master inverter at a max charge rate of 20 AC
> amps, which equates to a DC charge of about 74 A. All the other inverters
> are automatically set to this charge rate as well.
>
> Turning the chargers on one by one, I started to get quite an audible
> vibration from the combiner box at a combined charge of about 400 to 500 A.
>
> So I took the cover off of the combiner, which was vibrating noticabllly
> by feel. Most of the noise was from the cover not fitting tight. But the
> The box itself is also vibrating by feel.
>
> I took the combined charge up to 640A dc. This level of vibration
> definitely increases with an increased charge rate. And I am surprised
> because after all, we’re not talking AC here we’re talking DC. It almost
> reminds me of a large AC transformer in its behavior. The vibration did not
> seem to be originating at the inverters, then resonating to the combiner.
>
> I can dampen the vibration by adding a few things, but I’m surprised that
> this is happening. All connections in the combiner are tightened properly.
> Ideas?
>
>
>
>
>
>
>
>
>
>
> --
>
> *Kirk Herander / **kirkh@vermont.solar *
>
> *Owner|Principal, VT Solar, LLC*
>
> *Celebrating our 32st Anniversary 1991-2023!!*
>
> dba Vermont Solar Engineering
>
> 802.863.1202
> ___
> List sponsored by Redwood Alliance
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Re: [RE-wrenches] Parallel Homegrid Stack'd Busbar

[Jason Szumlanski via RE-wrenches]

It looks like the Lynx Power In (without fuses like the Distributor) would
work in my application. In fact, it appears it can be accomplished with a
single unit, making it a pretty sleek and cost-effective solution.

I'll look into that and let you know what direction I went once it's all
installed. Thanks, all.

Jason Szumlanski
Florida Solar Design Group

On Thu, Jun 29, 2023 at 10:58 AM Peter Giroux via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Morning all
>
>
>
>   You may also want to look at the Victron products. They have a 1000 amp
> version called the Lynx distributor.
>
>
>
> Peter Giroux
>
> ASAE
>
>
>
> *From:* RE-wrenches  *On
> Behalf Of *Bradley Bassett via RE-wrenches
> *Sent:* Thursday, June 29, 2023 10:47 AM
> *To:* RE-wrenches 
> *Cc:* Bradley Bassett 
> *Subject:* Re: [RE-wrenches] Parallel Homegrid Stack'd Busbar
>
>
>
> 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] High current dc combiner vibration

[Nick A Lucchese via RE-wrenches]

Good morning all. Seems we’ve all been aware of best practices for keeping DC 
cables bound together and twisted when possible. Does anyone know why Simpliphi 
recommends the exact opposite on page 18 of their installation manual? I recall 
observing this awhile ago and thought it was just something that they would 
remedy in their next manual revision cycle but appears to still be noted. Has 
their own validated testing for Simpliphi specific installs concluded to be 
contrary to others?

Off to work, Nick


> On Jun 29, 2023, at 10:09 AM, Kirk Herander via RE-wrenches 
>  wrote:
> 
> I have not twisted them. It is a lot of Cable as you might imagine and they 
> aren’t paired close together individual inverter to combiner or combiner to 
> battery cabinets, not 100% of the cable lengths anyway, maybe on average 80% 
> 
> On Thu, Jun 29, 2023 at 12:25 PM Starlight  > wrote:
> You may already know but… Are your DC cables bonded together and twisted 
> where possible to reduce magnetic fields? Higher the current and greater the 
> loop area, the stronger the fields are. More parallel loops, the greater the 
> combined flux = loud Hums.  
> 
> Larry Crutcher
> Starlight Solar Power Systems
> 
> 
> 
> 
> On Jun 29, 2023, at 8:19 AM, Kirk Herander via RE-wrenches 
>  > wrote:
> 
> All, 
> 
> I am in the middle of commissioning a 480kwh BP LFP battery bank, connected 
> to -10- OB Radian 8kw inverter/chargers.
> 
> For the DC combiner I am using midnite 2000 amp combiner boxes, modified to 
> mount  class T fuses on the positive bus, for both battery inputs and 
> inverter outputs.
> 
> For starters, I set the master inverter at a max charge rate of 20 AC amps, 
> which equates to a DC charge of about 74 A. All the other inverters are 
> automatically set to this charge rate as well.
> 
> Turning the chargers on one by one, I started to get quite an audible 
> vibration from the combiner box at a combined charge of about 400 to 500 A. 
> 
> So I took the cover off of the combiner, which was vibrating noticabllly by 
> feel. Most of the noise was from the cover not fitting tight. But the The box 
> itself is also vibrating by feel.
> 
> I took the combined charge up to 640A dc. This level of vibration definitely 
> increases with an increased charge rate. And I am surprised because after 
> all, we’re not talking AC here we’re talking DC. It almost reminds me of a 
> large AC transformer in its behavior. The vibration did not seem to be 
> originating at the inverters, then resonating to the combiner.
> 
> I can dampen the vibration by adding a few things, but I’m surprised that 
> this is happening. All connections in the combiner are tightened properly. 
> Ideas?
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> -- 
> Kirk Herander /  <>kirkh@vermont.solar 
> Owner|Principal, VT Solar, LLC
> Celebrating our 32st Anniversary 1991-2023!!
> dba Vermont Solar Engineering
> 802.863.1202
> ___
> List sponsored by Redwood Alliance
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> 
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> -- 
> Kirk Herander /  <>kirkh@vermont.solar 
> Owner|Principal, VT Solar, LLC
> Celebrating our 32st Anniversary 1991-2023!!
> dba Vermont Solar Engineering
> 802.863.1202
> ___
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Re: [RE-wrenches] High current dc combiner vibration

[Kirk Herander via RE-wrenches]

I have not twisted them. It is a lot of Cable as you might imagine and they
aren’t paired close together individual inverter to combiner or combiner to
battery cabinets, not 100% of the cable lengths anyway, maybe on average
80%

On Thu, Jun 29, 2023 at 12:25 PM Starlight  wrote:

> You may already know but… Are your DC cables bonded together and twisted
> where possible to reduce magnetic fields? Higher the current and greater
> the loop area, the stronger the fields are. More parallel loops, the
> greater the combined flux = loud Hums.
>
> Larry Crutcher
> Starlight Solar Power Systems
>
>
>
>
> On Jun 29, 2023, at 8:19 AM, Kirk Herander via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
> All,
>
> I am in the middle of commissioning a 480kwh BP LFP battery bank,
> connected to -10- OB Radian 8kw inverter/chargers.
>
> For the DC combiner I am using midnite 2000 amp combiner boxes, modified
> to mount  class T fuses on the positive bus, for both battery inputs and
> inverter outputs.
>
> For starters, I set the master inverter at a max charge rate of 20 AC
> amps, which equates to a DC charge of about 74 A. All the other inverters
> are automatically set to this charge rate as well.
>
> Turning the chargers on one by one, I started to get quite an audible
> vibration from the combiner box at a combined charge of about 400 to 500 A.
>
> So I took the cover off of the combiner, which was vibrating noticabllly
> by feel. Most of the noise was from the cover not fitting tight. But the
> The box itself is also vibrating by feel.
>
> I took the combined charge up to 640A dc. This level of vibration
> definitely increases with an increased charge rate. And I am surprised
> because after all, we’re not talking AC here we’re talking DC. It almost
> reminds me of a large AC transformer in its behavior. The vibration did not
> seem to be originating at the inverters, then resonating to the combiner.
>
> I can dampen the vibration by adding a few things, but I’m surprised that
> this is happening. All connections in the combiner are tightened properly.
> Ideas?
>
>
>
>
>
>
>
>
>
>
> --
> *Kirk Herander / **kirkh@vermont.solar *
> *Owner|Principal, VT Solar, LLC*
> *Celebrating our 32st Anniversary 1991-2023!!*
> dba Vermont Solar Engineering
> 802.863.1202
> ___
> List sponsored by Redwood Alliance
>
> Pay optional member dues here: http://re-wrenches.org
>
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>
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> --

*Kirk Herander / **kirkh@vermont.solar *

*Owner|Principal, VT Solar, LLC*

*Celebrating our 32st Anniversary 1991-2023!!*

dba Vermont Solar Engineering

802.863.1202
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Re: [RE-wrenches] High current dc combiner vibration

[bob--- via RE-wrenches]

The battery cables being close together, twisted too if possible, help 
reduce cable inductance
which can cause voltage drop across those cables at higher currents with 
120 Hz ripple.

Mainly with low frequency transformer inverter/chargers.

It's better to have them closer together than far apart, especially for 
longer battery cables.


boB

On 6/29/2023 9:24 AM, Starlight via RE-wrenches wrote:
You may already know but… Are your DC cables bonded together and 
twisted where possible to reduce magnetic fields? Higher the current 
and greater the loop area, the stronger the fields are. More parallel 
loops, the greater the combined flux = loud Hums.


Larry Crutcher
Starlight Solar Power Systems




On Jun 29, 2023, at 8:19 AM, Kirk Herander via RE-wrenches 
 wrote:


All,

I am in the middle of commissioning a 480kwh BP LFP battery bank, 
connected to -10- OB Radian 8kw inverter/chargers.


For the DC combiner I am using midnite 2000 amp combiner boxes, 
modified to mount  class T fuses on the positive bus, for both battery 
inputs and inverter outputs.


For starters, I set the master inverter at a max charge rate of 20 AC 
amps, which equates to a DC charge of about 74 A. All the other 
inverters are automatically set to this charge rate as well.


Turning the chargers on one by one, I started to get quite an audible 
vibration from the combiner box at a combined charge of about 400 to 
500 A.


So I took the cover off of the combiner, which was vibrating 
noticabllly by feel. Most of the noise was from the cover not fitting 
tight. But the The box itself is also vibrating by feel.


I took the combined charge up to 640A dc. This level of vibration 
definitely increases with an increased charge rate. And I am surprised 
because after all, we’re not talking AC here we’re talking DC. It 
almost reminds me of a large AC transformer in its behavior. The 
vibration did not seem to be originating at the inverters, then 
resonating to the combiner.


I can dampen the vibration by adding a few things, but I’m surprised 
that this is happening. All connections in the combiner are tightened 
properly. Ideas?











--
*Kirk Herander / **kirkh@vermont.solar*
*Owner|Principal, VT Solar, LLC*
*/Celebrating our 32^st  Anniversary 1991-2023!!/*
dba Vermont Solar Engineering
802.863.1202
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Re: [RE-wrenches] High current dc combiner vibration

[Darryl Thayer via RE-wrenches]

Hi all, just a few comments, The inverter charger has a ripple on the DC.
All have this; Outback is no exception.
However, all wires should be run together, positive and negative
same conduit and same hole, as the AC ripple magnetic effects cancel
from both wires.  Also, the circuit breaker has an internal loop to assist
in the trip, you may want to form a loop on the non-breaker conductor.
Years ago, I was faced with the ripple on the DC problem using a Xantrex
inverter (I think) I added a 150-volt electrolytic capacitor across the
battery lines, CAUTION: this may destroy the Radians So check with
Outback!!!

On Thu, Jun 29, 2023 at 10:19 AM Kirk Herander via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> All,
>
> I am in the middle of commissioning a 480kwh BP LFP battery bank,
> connected to -10- OB Radian 8kw inverter/chargers.
>
> For the DC combiner I am using midnite 2000 amp combiner boxes, modified
> to mount  class T fuses on the positive bus, for both battery inputs and
> inverter outputs.
>
> For starters, I set the master inverter at a max charge rate of 20 AC
> amps, which equates to a DC charge of about 74 A. All the other inverters
> are automatically set to this charge rate as well.
>
> Turning the chargers on one by one, I started to get quite an audible
> vibration from the combiner box at a combined charge of about 400 to 500 A.
>
> So I took the cover off of the combiner, which was vibrating noticabllly
> by feel. Most of the noise was from the cover not fitting tight. But the
> The box itself is also vibrating by feel.
>
> I took the combined charge up to 640A dc. This level of vibration
> definitely increases with an increased charge rate. And I am surprised
> because after all, we’re not talking AC here we’re talking DC. It almost
> reminds me of a large AC transformer in its behavior. The vibration did not
> seem to be originating at the inverters, then resonating to the combiner.
>
> I can dampen the vibration by adding a few things, but I’m surprised that
> this is happening. All connections in the combiner are tightened properly.
> Ideas?
>
>
>
>
>
>
>
>
>
>
> --
>
> *Kirk Herander / **kirkh@vermont.solar *
>
> *Owner|Principal, VT Solar, LLC*
>
> *Celebrating our 32st Anniversary 1991-2023!!*
>
> dba Vermont Solar Engineering
>
> 802.863.1202
> ___
> List sponsored by Redwood Alliance
>
> Pay optional member dues here: http://re-wrenches.org
>
> List Address: RE-wrenches@lists.re-wrenches.org
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Re: [RE-wrenches] High current dc combiner vibration

[Starlight via RE-wrenches]

You may already know but… Are your DC cables bonded together and twisted where 
possible to reduce magnetic fields? Higher the current and greater the loop 
area, the stronger the fields are. More parallel loops, the greater the 
combined flux = loud Hums.  

Larry Crutcher
Starlight Solar Power Systems




On Jun 29, 2023, at 8:19 AM, Kirk Herander via RE-wrenches 
 wrote:

All, 

I am in the middle of commissioning a 480kwh BP LFP battery bank, connected to 
-10- OB Radian 8kw inverter/chargers.

For the DC combiner I am using midnite 2000 amp combiner boxes, modified to 
mount  class T fuses on the positive bus, for both battery inputs and inverter 
outputs.

For starters, I set the master inverter at a max charge rate of 20 AC amps, 
which equates to a DC charge of about 74 A. All the other inverters are 
automatically set to this charge rate as well.

Turning the chargers on one by one, I started to get quite an audible vibration 
from the combiner box at a combined charge of about 400 to 500 A. 

So I took the cover off of the combiner, which was vibrating noticabllly by 
feel. Most of the noise was from the cover not fitting tight. But the The box 
itself is also vibrating by feel.

I took the combined charge up to 640A dc. This level of vibration definitely 
increases with an increased charge rate. And I am surprised because after all, 
we’re not talking AC here we’re talking DC. It almost reminds me of a large AC 
transformer in its behavior. The vibration did not seem to be originating at 
the inverters, then resonating to the combiner.

I can dampen the vibration by adding a few things, but I’m surprised that this 
is happening. All connections in the combiner are tightened properly. Ideas?










-- 
Kirk Herander /  <>kirkh@vermont.solar 
Owner|Principal, VT Solar, LLC
Celebrating our 32st Anniversary 1991-2023!!
dba Vermont Solar Engineering
802.863.1202
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Re: [RE-wrenches] Iron Edison Lithium SOC drift

[Darryl Thayer via RE-wrenches]

I have had similar problems with other equipment.  fully the battery to top
balance and then reset the SOC

On Thu, Jun 29, 2023 at 7:04 AM Jeremy Rodriguez via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> We have about 20 units out in service.
> All of the batteries SOC readings have drifted apart greatly.  IE always
> said not pay attention the battery readouts, and as long as voltage is
> even, that the batteries are working fine.
> After the last install we did of their batteries, their tech support group
> had me make up a cable to hook up a computer to the battery to re - set the
> BMS I believe.
> I’m scheduled with a new tech support channel for Iron Edison to take this
> on. Has anyone done this before , and is it really going to do any good ?
>
>
>
> 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-wrenches] High current dc combiner vibration

[Kirk Herander via RE-wrenches]

All,

I am in the middle of commissioning a 480kwh BP LFP battery bank, connected
to -10- OB Radian 8kw inverter/chargers.

For the DC combiner I am using midnite 2000 amp combiner boxes, modified to
mount  class T fuses on the positive bus, for both battery inputs and
inverter outputs.

For starters, I set the master inverter at a max charge rate of 20 AC amps,
which equates to a DC charge of about 74 A. All the other inverters are
automatically set to this charge rate as well.

Turning the chargers on one by one, I started to get quite an audible
vibration from the combiner box at a combined charge of about 400 to 500 A.

So I took the cover off of the combiner, which was vibrating noticabllly by
feel. Most of the noise was from the cover not fitting tight. But the The
box itself is also vibrating by feel.

I took the combined charge up to 640A dc. This level of vibration
definitely increases with an increased charge rate. And I am surprised
because after all, we’re not talking AC here we’re talking DC. It almost
reminds me of a large AC transformer in its behavior. The vibration did not
seem to be originating at the inverters, then resonating to the combiner.

I can dampen the vibration by adding a few things, but I’m surprised that
this is happening. All connections in the combiner are tightened properly.
Ideas?










-- 

*Kirk Herander / **kirkh@vermont.solar *

*Owner|Principal, VT Solar, LLC*

*Celebrating our 32st Anniversary 1991-2023!!*

dba Vermont Solar Engineering

802.863.1202
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Re: [RE-wrenches] Parallel Homegrid Stack'd Busbar

[Peter Giroux via RE-wrenches]

Morning all

 

  You may also want to look at the Victron products. They have a 1000 amp 
version called the Lynx distributor. 

 

Peter Giroux

ASAE

 

From: RE-wrenches  On Behalf Of 
Bradley Bassett via RE-wrenches
Sent: Thursday, June 29, 2023 10:47 AM
To: RE-wrenches 
Cc: Bradley Bassett 
Subject: Re: [RE-wrenches] Parallel Homegrid Stack'd Busbar

 

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 
mailto: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 
mailto: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 
mailto: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 
mailto: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] 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
>>
>>
>>
>>
>> ___
> List sponsored by Redwood Alliance
>
> Pay optional member dues here: http://re-wrenches.org
>
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Re: [RE-wrenches] Parallel Homegrid Stack'd Busbar

[Jason Szumlanski via RE-wrenches]

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] Parallel Homegrid Stack'd Busbar

[Jason Szumlanski via RE-wrenches]

Thanks, William. I was thinking that exact same JBX12124 junction box.
However, I think for my configuration I can fit everything in a single
junction box with two Blue Sea Powerbar 1000 busbars. That might be a
compact and cost effective solution.

Really appreciate the pics!

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 9:35 AM William Miller 
wrote:

>
>
>
>
>
> https://millersolar.com/MillerSolar/Portfolio/Inverters/battery_iinverters/JP_Radian/JP_Radian.html
>
>
>
>
>
> 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 *Jason Szumlanski via RE-wrenches
> *Sent:* Thursday, June 29, 2023 4:55 AM
> *To:* RE-wrenches
> *Cc:* Jason Szumlanski
> *Subject:* [RE-wrenches] Parallel Homegrid Stack'd Busbar
>
>
>
> 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] Parallel Homegrid Stack'd Busbar

[Lloyd Hoffstatter via RE-wrenches]

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 
mailto: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 
mailto: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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--



Mac Lewis

"Yo solo sé que no sé nada." -Sócrates

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Re: [RE-wrenches] Parallel Homegrid Stack'd Busbar

[William Miller via RE-wrenches]

https://millersolar.com/MillerSolar/Portfolio/Inverters/battery_iinverters/JP_Radian/JP_Radian.html





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 *Jason Szumlanski via RE-wrenches
*Sent:* Thursday, June 29, 2023 4:55 AM
*To:* RE-wrenches
*Cc:* Jason Szumlanski
*Subject:* [RE-wrenches] Parallel Homegrid Stack'd Busbar



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] Parallel Homegrid Stack'd Busbar

[Jay via RE-wrenches]

FYIThe 12 and 15kw both have dual lugs on positive and negative battery inputs. On Jun 29, 2023, at 6:47 AM, Jason Szumlanski via RE-wrenches  wrote:I was thinking the Midnite combiner, but it's a very big product for what we're trying to accomplish. I was hoping Polaris type tap connectors might be able to do it. I think this application is going to require a somewhere around 800A calculated minimum circuit ampacity. I'm not quite certain how to calculate the required ampacity properly for this bus. Either way, I would need to find a connector that accepts fine stranded cable. Such an animal might not exist in the required ampacity. The Ilsco PBTS line accepts find stranded cable, and if you stagger inputs and outputs it is my understanding that the ampacity allowance is additive. The 600 MCM 4-port connectors might have the required ampacity. Maybe I'm dreaming and a Polaris-type connector isn't an easy way out.Alternatively, I was thinking of a Blue Sea 1000A busbar mounted in a trough or junction box. Jason SzumlanskiPrincipal Solar Designer | Florida Solar Design GroupNABCEP Certified Solar Professional (PVIP)Florida State Certified Solar Contractor CVC56956On Thu, Jun 29, 2023 at 7:58 AM  wrote:Hi JasonWe’re using the Midnite MNCB battery combiner for the same purpose.https://www.midnitesolar.com/productPhoto.php?product_ID=439=BATTERYI’m curious what others may suggest for options.ThanksRich From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jason Szumlanski via RE-wrenchesSent: Thursday, June 29, 2023 7:55 AMTo: RE-wrenchesCc: Jason SzumlanskiSubject: [RE-wrenches] Parallel Homegrid Stack'd Busbar 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 SzumlanskiFlorida Solar Design Group  

___List sponsored by Redwood AlliancePay optional member dues here: http://re-wrenches.orgList Address: RE-wrenches@lists.re-wrenches.orgChange listserver email address & settings:http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.orgThere are two list archives for searching. When one doesn't work, try the other:https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.orgList rules & etiquette:http://www.re-wrenches.org/etiquette.htmCheck out or update participant bios:http://www.members.re-wrenches.org___
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Re: [RE-wrenches] Iron Edison Lithium SOC drift

[Dan Fink via RE-wrenches]

One of my clients had to do this a couple years back, and it did seem to
reset the %SOC of each BMS. I however was not able to be there for it due
to long travel distance.

Iron Edison is no longer in business, so I don't know how much tech support
you are going to get

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 Thu, Jun 29, 2023 at 6:05 AM Jeremy Rodriguez via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> We have about 20 units out in service.
> All of the batteries SOC readings have drifted apart greatly.  IE always
> said not pay attention the battery readouts, and as long as voltage is
> even, that the batteries are working fine.
> After the last install we did of their batteries, their tech support group
> had me make up a cable to hook up a computer to the battery to re - set the
> BMS I believe.
> I’m scheduled with a new tech support channel for Iron Edison to take this
> on. Has anyone done this before , and is it really going to do any good ?
>
>
>
> Jeremy Rodriguez
> Solar Installation / Design
> All Solar, Inc.
> 1453 M St.
> Penrose Colorado 81240
>
> Sent by Jeremy's iPhone. Sorry for typos and shorthand.
> ___
> List sponsored by Redwood Alliance
>
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>
> List Address: RE-wrenches@lists.re-wrenches.org
>
> Change listserver email address & settings:
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>
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Re: [RE-wrenches] Parallel Homegrid Stack'd Busbar

[Jason Szumlanski via RE-wrenches]

I was thinking the Midnite combiner, but it's a very big product for what
we're trying to accomplish. I was hoping Polaris type tap connectors might
be able to do it. I think this application is going to require a somewhere
around 800A calculated minimum circuit ampacity. I'm not quite certain how
to calculate the required ampacity properly for this bus. Either way, I
would need to find a connector that accepts fine stranded cable. Such an
animal might not exist in the required ampacity. The Ilsco PBTS line
accepts find stranded cable, and if you stagger inputs and outputs it is my
understanding that the ampacity allowance is additive. The 600 MCM 4-port
connectors might have the required ampacity. Maybe I'm dreaming and a
Polaris-type connector isn't an easy way out.

Alternatively, I was thinking of a Blue Sea 1000A busbar mounted in a
trough or junction box.

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 7:58 AM  wrote:

> Hi Jason
>
> We’re using the Midnite MNCB battery combiner for the same purpose.
>
>
> https://www.midnitesolar.com/productPhoto.php?product_ID=439=BATTERY
>
> I’m curious what others may suggest for options.
>
> Thanks
>
> Rich
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
> Behalf Of *Jason Szumlanski via RE-wrenches
> *Sent:* Thursday, June 29, 2023 7:55 AM
> *To:* RE-wrenches
> *Cc:* Jason Szumlanski
> *Subject:* [RE-wrenches] Parallel Homegrid Stack'd Busbar
>
>
>
> 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] Parallel Homegrid Stack'd Busbar

[Jason Szumlanski via RE-wrenches]

Thanks, Mac. However, I am also paralleling two Sol-Ark 15k. Since each
battery only accepts a single cable lug I believe, I need to make a splice
somewhere.

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 8:28 AM Mac Lewis via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> 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
>>
>>
>> ___
>> List sponsored by Redwood Alliance
>>
>>
>
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Re: [RE-wrenches] Parallel Homegrid Stack'd Busbar

[Mac Lewis via RE-wrenches]

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
>
>
> ___
> List sponsored by Redwood Alliance
>
> Pay optional member dues here: http://re-wrenches.org
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-- 



Mac Lewis

*"Yo solo sé que no sé nada." -Sócrates*
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Re: [RE-wrenches] Parallel Homegrid Stack'd Busbar

[Maverick Brown via RE-wrenches]

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 
>  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
> 
> 
> ___
> List sponsored by Redwood Alliance
> 
> Pay optional member dues here: http://re-wrenches.org
> 
> List Address: RE-wrenches@lists.re-wrenches.org
> 
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> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
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> other:
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[RE-wrenches] Iron Edison Lithium SOC drift

[Jeremy Rodriguez via RE-wrenches]

We have about 20 units out in service. 
All of the batteries SOC readings have drifted apart greatly.  IE always said 
not pay attention the battery readouts, and as long as voltage is even, that 
the batteries are working fine. 
After the last install we did of their batteries, their tech support group had 
me make up a cable to hook up a computer to the battery to re - set the BMS I 
believe.  
I’m scheduled with a new tech support channel for Iron Edison to take this on. 
Has anyone done this before , and is it really going to do any good ?  



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] Parallel Homegrid Stack'd Busbar

[Rich Nicol via RE-wrenches]

Hi Jason

We’re using the Midnite MNCB battery combiner for the same purpose.

https://www.midnitesolar.com/productPhoto.php?product_ID=439 

 =BATTERY

I’m curious what others may suggest for options.

Thanks

Rich

 

From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf 
Of Jason Szumlanski via RE-wrenches
Sent: Thursday, June 29, 2023 7:55 AM
To: RE-wrenches
Cc: Jason Szumlanski
Subject: [RE-wrenches] Parallel Homegrid Stack'd Busbar

 

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-wrenches] Parallel Homegrid Stack'd Busbar

[Jason Szumlanski via RE-wrenches]

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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