[RE-wrenches] Adding generators to PV systems

[Wayne Irwin]

Hello All,


We have several customers adding generators to their homes on which we have 
previously installed PV systems.

Historically most generators didn't produce a clean enough 60Hz sinewave to get 
the inverters to feed back.

However, with the generator technology improving and the introduction of 
inverter generators, I'm concerned that if the inverters feed back to the 
generator it will smoke the stator.


I'm wondering if any of you have any experience/issues?  If so, what solutions 
or recommendations do you have?


Thanks,


Wayne Irwin,
President
License #CVC56695
State Licensed Solar Contractor
Pure Energy Solar International Inc.
wa...@pureenergysolar.com
http://PureEnergySolar.com
http://SolarChargingStation.net
352 377-6527 Office
352 336-3299 Fax


The Sun Is Always Shining!


The content of this message is Pure Energy Solar Confidential. If you are not 
the intended recipient and have received this message in error, any use or 
distribution is prohibited. Please notify me immediately by reply e-mail and 
delete this message from your computer system. Thank you.
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[RE-wrenches] automatic transfer switch

[jay]

HI all,

I’m doing a project with 2 radians in a redundant configuration.
Each one would go into a transfer switch to power the common load.  

I’m looking for a good, fast transfer switch.  30amp 120/240 is fine.
And maybe a mechanical feature as well.
Code isn’t an issue
Will be off grid, remote mexico.

There is the Iota of course, but was just looking for options.

thx in advance,

jay

peltz power




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Re: [RE-wrenches] Administrative stuff

[Michael Welch]

Hi gang. Contact me off list with any questions or concerns. 

We've finally got our file attachment problem at least kinda sorta worked out. 

When attaching files, consider the following:
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[RE-wrenches] Wire management with S5! Railless System

[Mike Kocsmiersky]

In the past I determined that anything above a 4 pitch on standing seam roofs 
would require rails.  Just too difficult otherwise.  I would recommend the use 
of rails all the time however on larger systems, there can be significant added 
cost.  Because the seams don't align as a perfect multiple of the module length 
or width, you do end up having some modules with a greater spacing between 
supports than perhaps the module spec sheet requires.  Additionally I have 
found that for multiple home run strings, a stainless steel retaining clip 
dunked in rubber (mfg that way), is a good way to bundle the wires.  Even 
better is to use a flexible conduit with a slit to run the home run wiring up / 
across under the array, where the conduit supports are on S-5 clips.  Sorry 
don't have access to pictures at the moment.Mike KocsmierskySpirit Solar
  From: "re-wrenches-requ...@lists.re-wrenches.org" 

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 Sent: Thursday, January 11, 2018 3:43 PM
 Subject: RE-wrenches Digest, Vol 11, Issue 13
   
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 Today's Topics:

  1. Wire management with S5! Railless System (Hilton Dier)
  2. Re: Wire management with S5! Railless System (August Goers)
  3. This is as admin test message, please do not respond
      (Michael Welch)
  4. This is as admin test message, please do not respond
      (Michael Welch)
Add my voice to the “never without rails” chorus. 

1) S-5 clamps are only as good as the standing seam they are on. At least rails 
spread out the stresses and avoid large point loads. 

2) Ice likes to slide. Rails give some height above that. 

3) Rail height gives better ventilation and hot weather performance.

4) Module width is never an even multiple of roofing pan width. No rails means 
inevitably some modules will be “diving boards.”

5) Without rails, getting the modules to an even height is a giant PITA. Takes 
forever. I did it once and never again.

Best

Hilton

Hilton Dier III
Renewable Energy Design
Missisquoi River Hydro LLC
Ray - I agree with the others that S5 clamps with rails is the way to go on
standing seam roofs. We buy our S5 clamps through LMCurbs and I've found
their pricing and service to be good: http://www.lmcurbs.com/

We go though a good deal of effort to determine the exact standing seam
make/model and then procure the S5 clamps that are specifically designed
for the roof. Even then, sometimes the seams need to be compressed a bit to
slip the clamp over. You can squeeze the seams with a large pair of channel
locks with a piece or cardboard to protect the channel lock teeth from
marring the metal standing seam coating.

If you still need to run PV wires along modules frames without rails,
HellermannTyton might make a product that will work for you:
http://www.hellermanntyton.us/industry.aspx?id=3132
You might be able to get a solar sampler kit from them to find a good fit.

Best,

August
Luminalt


On Wed, Jan 10, 2018 at 9:18 PM, Ray  wrote:

> Hi All;
>
> I was wondering what folks were doing these days for wire management on
> Standing seam roofs with the S5! clamps and no rails. I'm at a loss (once
> again) for how to secure the home runs without a rail.  I have some of
> those module edge clips, but those only hold one wire, and I've had them
> slip off (wire dangling visible from ground.)
> Also most suppliers seem to only carry the universal S5! clamps, but I
> have found those to really bend up the metal on certain types of standing
> seam roofs.  I wanted to order the recommended model for the particular
> roof.  AEE quit carrying S5 altogether.
> Give me your Standing seam wisdom.
>
> Thanks,
>
> Ray Walters
> Remote Solar
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Hi gang. I'm still testing file attachments, please do not respond. 

Sorry to bother you 

Re: [RE-wrenches] Darfon hybrid inverters

[Mick Abraham]

Bill asked this:

Hi folks--Does anyone have contact info for Darfon inverters? I've sent
emails and called their website number, but the phone rings and then
disconnects.

We were interested in their H5000/5001 series inverters--they look good on
the internet. Anyone know if these are actual products that will be
released soon?

Bill Hennessy
Berks Solar, LLC
371 Centennial Rd
Mertztown, PA 19539

o 610 682 4300 <(610)%20682-4300>
c 484 560 4666 <(484)%20560-4666>
NABCEP certified installer
PA contractor #44411
www.berkssolar.com

Mick here suggests: I think Moore Energy (sister company to PV Racking) is
distributing this line out of Southampton, PA & I think they have the DC
coupled hybrids now. The AC coupled version hybrid is still a ways out but
the microinverter line is shipping now. (646) 520 7673 Jing Yu is the sales
lady ji...@mooreenergy.net

I've not sold any or installed any of these.  "I have everything I need
except customers," but the specs look interesting. Be sure to report back
if you get some field experience with this.

Mick Abraham, Proprietor
www.abrahamsolar.com

Landline: 970-731-4675
Cell phone or for text messaging: 970-946-6584
ᐧ
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Re: [RE-wrenches] Wire management with S5! Railless System

[Tump]

We have found that the SnapNrack rails and using the 
SnapNrack Wide Base Seam Clamp w/L-Foot, 242-05151 

is priced right and has fewer hassles then the older S5s. Wire management also 
has been addressed by SnapNrack

> On Jan 11, 2018, at 3:45 PM, August Goers  wrote:
> 
> Ray - I agree with the others that S5 clamps with rails is the way to go on
> standing seam roofs. We buy our S5 clamps through LMCurbs and I've found
> their pricing and service to be good: http://www.lmcurbs.com/
> 
> We go though a good deal of effort to determine the exact standing seam
> make/model and then procure the S5 clamps that are specifically designed
> for the roof. Even then, sometimes the seams need to be compressed a bit to
> slip the clamp over. You can squeeze the seams with a large pair of channel
> locks with a piece or cardboard to protect the channel lock teeth from
> marring the metal standing seam coating.
> 
> If you still need to run PV wires along modules frames without rails,
> HellermannTyton might make a product that will work for you:
> http://www.hellermanntyton.us/industry.aspx?id=3132
> You might be able to get a solar sampler kit from them to find a good fit.
> 
> Best,
> 
> August
> Luminalt
> 
> 
> On Wed, Jan 10, 2018 at 9:18 PM, Ray  wrote:
> 
>> Hi All;
>> 
>> I was wondering what folks were doing these days for wire management on
>> Standing seam roofs with the S5! clamps and no rails. I'm at a loss (once
>> again) for how to secure the home runs without a rail.  I have some of
>> those module edge clips, but those only hold one wire, and I've had them
>> slip off (wire dangling visible from ground.)
>> Also most suppliers seem to only carry the universal S5! clamps, but I
>> have found those to really bend up the metal on certain types of standing
>> seam roofs.  I wanted to order the recommended model for the particular
>> roof.  AEE quit carrying S5 altogether.
>> Give me your Standing seam wisdom.
>> 
>> Thanks,
>> 
>> Ray Walters
>> Remote Solar
>> ___
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> t...@swnl.net 
>   
>  www.SWNL.net 
> 
> Solarwinds Northernlights   
>Serving Mid Coast Maine & Northern California
>  207-832-7574   Cl. 610-517-8401  
> 
>   Blair "TUMP" May
>  MAINE'S CHARTER 
>   NABCEP"Certified PV Installer" 
>
>     MAINE'S CHARTER 
>   Trace Xantrex "Certified" Dealer / Installer"
> 


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[RE-wrenches] Sunflower - Energy Innovations

[Chad Waits]

Wrenches,

Just had a company reach out and ask if we could fix an Energy Innovations
Sunflower CPV system. Their contractor has gone out of business as well as
Energy Innovations (go figure). I said NO WAY but, thought I would ask on
his behalf if any of you knows if someone bought their IP and can offer
repair services for him.

Thanks!

Chad Waits
President/Owner ­ Net Zero Solar
101 W. 5th St., Tucson, AZ  85705
Office: 520-207-4053
Cell: 520-270-4873
NABCEP Certified PV Installation Professional




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[RE-wrenches] Darfon hybrid inverters

[Bill Hennessy]

Hi folks--Does anyone have contact info for Darfon inverters? I've sent emails 
and called their website number, but the phone rings and then disconnects.
We were interested in their H5000/5001 series inverters--they look good on the 
internet. Anyone know if these are actual products that will be released soon? 
Bill Hennessy
Berks Solar, LLC
371 Centennial Rd
Mertztown, PA 19539

o 610 682 4300
c 484 560 4666
NABCEP certified installer
PA contractor #44411
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[RE-wrenches] This is as admin test message, please do not respond

[Michael Welch]

Hi gang. I'm still testing file attachments, please do not respond. 

Sorry to bother you with these, but getting this figured out is important. 
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Re: [RE-wrenches] Wire management with S5! Railless System

[August Goers]

Ray - I agree with the others that S5 clamps with rails is the way to go on
standing seam roofs. We buy our S5 clamps through LMCurbs and I've found
their pricing and service to be good: http://www.lmcurbs.com/

We go though a good deal of effort to determine the exact standing seam
make/model and then procure the S5 clamps that are specifically designed
for the roof. Even then, sometimes the seams need to be compressed a bit to
slip the clamp over. You can squeeze the seams with a large pair of channel
locks with a piece or cardboard to protect the channel lock teeth from
marring the metal standing seam coating.

If you still need to run PV wires along modules frames without rails,
HellermannTyton might make a product that will work for you:
http://www.hellermanntyton.us/industry.aspx?id=3132
You might be able to get a solar sampler kit from them to find a good fit.

Best,

August
Luminalt


On Wed, Jan 10, 2018 at 9:18 PM, Ray  wrote:

> Hi All;
>
> I was wondering what folks were doing these days for wire management on
> Standing seam roofs with the S5! clamps and no rails. I'm at a loss (once
> again) for how to secure the home runs without a rail.  I have some of
> those module edge clips, but those only hold one wire, and I've had them
> slip off (wire dangling visible from ground.)
> Also most suppliers seem to only carry the universal S5! clamps, but I
> have found those to really bend up the metal on certain types of standing
> seam roofs.  I wanted to order the recommended model for the particular
> roof.  AEE quit carrying S5 altogether.
> Give me your Standing seam wisdom.
>
> Thanks,
>
> Ray Walters
> Remote Solar
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[RE-wrenches] Wire management with S5! Railless System

[Hilton Dier]

Add my voice to the “never without rails” chorus. 

1) S-5 clamps are only as good as the standing seam they are on. At least rails 
spread out the stresses and avoid large point loads. 

2) Ice likes to slide. Rails give some height above that. 

3) Rail height gives better ventilation and hot weather performance.

4) Module width is never an even multiple of roofing pan width. No rails means 
inevitably some modules will be “diving boards.”

5) Without rails, getting the modules to an even height is a giant PITA. Takes 
forever. I did it once and never again.

Best

Hilton

Hilton Dier III
Renewable Energy Design
Missisquoi River Hydro LLC
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Re: [RE-wrenches] Wire management with S5! Railless System

[MDElectricSolar]

I would use rails with the s-5, gives you something to attach wires to.

Michael D Nelson
MD Electric & Solar, Inc.
707-684-0064 mobile
707-884-1862 office
www.mdelectricsolar.com
www.facebook.com/mdelectricandsolar


> On Jan 10, 2018, at 9:18 PM, Ray  wrote:
> 
> Hi All;
> 
> I was wondering what folks were doing these days for wire management on 
> Standing seam roofs with the S5! clamps and no rails. I'm at a loss (once 
> again) for how to secure the home runs without a rail.  I have some of those 
> module edge clips, but those only hold one wire, and I've had them slip off 
> (wire dangling visible from ground.)
> Also most suppliers seem to only carry the universal S5! clamps, but I have 
> found those to really bend up the metal on certain types of standing seam 
> roofs.  I wanted to order the recommended model for the particular roof.  AEE 
> quit carrying S5 altogether.
> Give me your Standing seam wisdom.
> 
> Thanks,
> 
> Ray Walters
> Remote Solar
> ___
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Re: [RE-wrenches] Wire management with S5! Railless System

[Jay]

Hi Ray

Here are a ton of newer clips that carry 2-many wires, in different 
configurations, straight, 90 degree etc
Most in SS some now in synthetic. 
And yea it’s kind of a pain with that type racking. 


Talk to Bryan at PV cables, he stocks lots of them. 
707-923-3000

Jay
Peltz power

> On Jan 10, 2018, at 9:18 PM, Ray  wrote:
> 
> Hi All;
> 
> I was wondering what folks were doing these days for wire management on 
> Standing seam roofs with the S5! clamps and no rails. I'm at a loss (once 
> again) for how to secure the home runs without a rail.  I have some of those 
> module edge clips, but those only hold one wire, and I've had them slip off 
> (wire dangling visible from ground.)
> Also most suppliers seem to only carry the universal S5! clamps, but I have 
> found those to really bend up the metal on certain types of standing seam 
> roofs.  I wanted to order the recommended model for the particular roof.  AEE 
> quit carrying S5 altogether.
> Give me your Standing seam wisdom.
> 
> Thanks,
> 
> Ray Walters
> Remote Solar
> ___
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Re: [RE-wrenches] Wire management with S5! Railless System

[Jamie Rennie]

Wire management on railess systems is a challenge. In the past I have tried
to do as much of the wire management as possible before laying the panels
by zip tying the leads to the side of panels and strategizing string
routes. Also used flat trays like this for home runs:
http://www.raytraysolar.com/

There are lots of creative ways to use the S-5 attachment to run home runs
or install straps at key places. S-5 people are really helpful if you send
them a pick of your roof. We get ours from Soligent.

On Jan 10, 2018 9:17 PM, "Ray"  wrote:

> Hi All;
>
> I was wondering what folks were doing these days for wire management on
> Standing seam roofs with the S5! clamps and no rails. I'm at a loss (once
> again) for how to secure the home runs without a rail.  I have some of
> those module edge clips, but those only hold one wire, and I've had them
> slip off (wire dangling visible from ground.)
> Also most suppliers seem to only carry the universal S5! clamps, but I
> have found those to really bend up the metal on certain types of standing
> seam roofs.  I wanted to order the recommended model for the particular
> roof.  AEE quit carrying S5 altogether.
> Give me your Standing seam wisdom.
>
> Thanks,
>
> Ray Walters
> Remote Solar
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