Re: [RE-wrenches] Combining Multiple Inverters

How about 705.20 and 21? From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Corey Shalanski Sent: Thursday, June 26, 2014 6:11 PM To: re-wrenches@lists.re-wrenches.org Subject: Re: [RE-wrenches] Combining Multiple Inverters

Re: [RE-wrenches] No toxic sealant

food grade silicone sealant, storage tanks use a rubber liners and that material can be used as a gasket roofing suppliers will have this Jerry On Thu, Jun 26, 2014 at 1:07 PM, Drake wrote: > Hello Wrenches, > > We are planning to install on a metal roof that rain water will be > collected fro

Re: [RE-wrenches] Combining Multiple Inverters

I have never seen an inverter that does not specify a OCPD size. Jay Peltz power. Sent from my iPhone > On Jun 26, 2014, at 3:20 PM, Dave Click wrote: > > Corey, > > The line of reasoning is faulty. It's 705.12(D)(1). Micro-inverters are the > exception because they are specially listed to

Re: [RE-wrenches] Combining Multiple Inverters

ᐧ We considered the necessity to shut down individual inverters and determined that the added costs of an inverter output combiner panel were not merited. I agree that in theory it seems beneficial to be able to switch each inverter individually, but how often does this occur in practice? For the r

Re: [RE-wrenches] Combining Multiple Inverters

ᐧ Perhaps I should've been more specific with my scenario. I was imagining a supply side connection, as this would more commonly be the case when combining multiple inverters. In this case it seems like the provisions of 705.12(D) for load side conections don't even apply, no? Rather 705.12(A) beco

Re: [RE-wrenches] No toxic sealant

Butyl tape is what we used for decades on rain catch systems.Check with the Earth ship folks at Greater World, they're all over the details on rain catch systems. http://earthship.com/community R.Ray Walters CTO, Solarray, Inc Nabcep Certified PV Installer, Licensed Master Electrician Solar

Re: [RE-wrenches] Combining Multiple Inverters

Corey, The line of reasoning is faulty. It's 705.12(D)(1). Micro-inverters are the exception because they are specially listed to share a breaker. As for the other inverters, doubling them up on a single breaker / disconnect probably goes against their installation instructions [110.3(B)] and

Re: [RE-wrenches] No toxic sealant

What fastener are you using? Could you just use an EJOT type lag and skip sealant? Jesse Sent from my iPhone > On Jun 26, 2014, at 3:07 PM, Drake > wrote: > > Hello Wrenches, > > We are planning to install on a metal roof that rain water will be collected > from. Usually we use butyl tape

Re: [RE-wrenches] Split bolts

We've found that Scotch 88 tape is much less prone to heat sag and thicker so much more appropriate in containing the mastic. Sent from my iPhone On Jun 26, 2014, at 1:44 PM, William Miller wrote: > Rated only for 300 volts. > > Miller Solar > > On Jun 26, 2014, at 1:04 PM, wrote: > >> H

Re: [RE-wrenches] RE-wrenches Digest, Vol 7, Issue 245

We considered the necessity to shut down individual inverters and determined that the added costs of an inverter output combiner panel were not merited. I agree that in theory it seems beneficial to be able to switch each inverter individually, but how often does this occur in practice? For the rel

Re: [RE-wrenches] Split bolts

Rated only for 300 volts. Miller Solar > On Jun 26, 2014, at 1:04 PM, wrote: > > How about these? > > <30-222[3].jpg> > > http://www.idealindustries.com/prodDetail.do?prodId=30-222&div=0&l1=lugs > > I’ve been using them for a while now. > > Jeremy > > All Solar Inc > Jeremy & Amy Ro

[RE-wrenches] No toxic sealant

Hello Wrenches, We are planning to install on a metal roof that rain water will be collected from. Usually we use butyl tape and a butyl base caulk to seal around the L-Feet. Is there a good method that would not require using toxic material to seal the feet on a metal roof. Thank you, Drak

Re: [RE-wrenches] Split bolts

How about these? http://www.idealindustries.com/prodDetail.do?prodId=30-222&div=0&l1=lugs I’ve been using them for a while now. Jeremy All Solar Inc Jeremy & Amy Rodriguez 1463 M. Street Penrose, CO 81240 719-372-3808 1-800-499-4055 allso...@scswifi.net allso...@live.com www.asolarelectric.

Re: [RE-wrenches] Split bolts

Brilliant! Thanks. Miller Solar > On Jun 26, 2014, at 11:47 AM, Drake > wrote: > > When using split bolts, roll up splicing tape and push it between the forks > of the bolt. This fills in the gap and is very helpful in eliminating the > sharp edges. > > Our utility won't allow piercing c

Re: [RE-wrenches] Split bolts

When using split bolts, roll up splicing tape and push it between the forks of the bolt. This fills in the gap and is very helpful in eliminating the sharp edges. Our utility won't allow piercing connectors on a line side tap. At 02:14 PM 6/25/2014, you wrote: Content-Type: multipart/related

Re: [RE-wrenches] Pv wire

Thanks. I remember it being about .05 or so. Kirk Herander VSE > On Jun 26, 2014, at 1:53 PM, "Daniel Young" wrote: > > My 2kV PV wire is 0.29"OD, so I use 0.053in^2. It's single layer insulation > if that helps. > > Daniel Young, > NABCEP Certified PV Installation ProfessionalTM: Cert #03150

Re: [RE-wrenches] Pv wire

Yeah, 1k/2k wire shows a diameter of 0.26" on the spec sheet, or 0.053093 in^2. Jason Szumlanski ​Fafco Solar​ On Thu, Jun 26, 2014 at 2:06 PM, Kirk wrote: > Nice calculator. RHH may be equivalent to 600 volt pv wire, but 1k/2k pv > wire is thicker. > > Kirk Herander > VSE > > On Jun 26, 20

Re: [RE-wrenches] Pv wire

Nice calculator. RHH may be equivalent to 600 volt pv wire, but 1k/2k pv wire is thicker. Kirk Herander VSE > On Jun 26, 2014, at 1:49 PM, Jason Szumlanski wrote: > > I use this site when I need a quick answer. Use RHH (covered) with one > conductor. You get the same answer. > > http://www.

Re: [RE-wrenches] Pv wire

My 2kV PV wire is 0.29"OD, so I use 0.053in^2. It's single layer insulation if that helps. Daniel Young, NABCEP Certified PV Installation ProfessionalTM: Cert #031508-90 NABCEP Certified Solar Heating InstallerTM: Cert #SH031409-13 Lead Systems Designer for: www.dovetailsolar.com Ph: 740-274-0

Re: [RE-wrenches] Pv wire

Dan, Pv wire is xlpe. Kirk Herander VSE > On Jun 26, 2014, at 1:44 PM, d...@foxfire-energy.com wrote: > > > I got .0437" for RHH-2 with outer jacket in the 2011 code > > Original Message > Subject: [RE-wrenches] Pv wire > From: "Kirk" > Date: Thu, June 26, 2014 1:15 pm > To:

Re: [RE-wrenches] Pv wire

I use this site when I need a quick answer. Use RHH (covered) with one conductor. You get the same answer. http://www.electrician2.com/calculators/rf_calculator.html Jason Szumlanski ​Fafco Solar​ On Thu, Jun 26, 2014 at 1:46 PM, Jason Szumlanski wrote: > 0.0437435 per this attached spec sh

Re: [RE-wrenches] Pv wire

Correction, my wire is 0.259" OD, still 0.053 in^2 Daniel Young, NABCEP Certified PV Installation ProfessionalTM: Cert #031508-90 NABCEP Certified Solar Heating InstallerTM: Cert #SH031409-13 Lead Systems Designer for: www.dovetailsolar.com Ph: 740-274-0139 We’ve completed over 310 renewable

Re: [RE-wrenches] Pv wire

I got .0437" for RHH-2 with outer jacket in the 2011 code Original Message Subject: [RE-wrenches] Pv wire From: "Kirk" Date: Thu, June 26, 2014 1:15 pm To: "RE-wrenches" Hi folks, What is the proper approximate in2 area to use for #10 1kva/2kva pv wire for calculating cond

[RE-wrenches] Pv wire

Hi folks, What is the proper approximate in2 area to use for #10 1kva/2kva pv wire for calculating conduit fill? I'm on a job site and don't have the specs with me. Thanks. Kirk Herander VSE ___ List sponsored by Redwood Alliance List Address: RE-wr

Re: [RE-wrenches] Racking System - Identification Help

As an update- the system used at this install turned out to be a currently-available product called SolAttach: http://www.solattach.com/ On 2014/6/3, 11:11, Dave Click wrote: Jason, thanks for the comment! I agree that systems could connect to just sheathing and stay on the roof- I think Zilla

Re: [RE-wrenches] Rapid shutdown for pole mounts

NEC says 10' from the array, defined as "A mechanically integrated assembly of modules or panels with a support structure and foundation, tracker, and other components, as required, to form a direct-current power-producing unit. 70HB14_CH00_FM_pi_xii.pdf " I take this to mean that the "array" d

Re: [RE-wrenches] Combining Multiple Inverters

Jason, I agree completely. I'm curious which inverters you plan to use and I'm interested to see the cost benefit. There is so much "stuff" in a PV installation, and not all of it contributes directly to safety and serviceability. Especially now that we are seeing rooftop 1000V string inverters

Re: [RE-wrenches] Combining Multiple Inverters

705.12(D) reads, "... the interconnection provisions for the utility-interactive inverter(s) shall comply with (D)(1) through (D)(7)." That's inverters - plural. The interconnection must be protected by dedicated OCPD, not each inverter individually. Microinverters comply because of this interpreta

[RE-wrenches] AFCI Solved, Wet rated wire

Friends: I found the problem: There was a damaged wire immersed in water in the conduit. The voltage was fluctuating at the inverter end and solid at the module end. After testing the Isc a few times the conductor burned through and I was able to pull one end out of the conduit. So, the