I just got back from being out of the office for a week+ and just read a
few ofthese. I hope this is not redundant.
6AWG is the size that meets several tests for exposed installations.By
that I mean that it is not protected. If you arerunning the array EGC
exposed, you would use at least 6AWG depending upon the size of the
overcurrent protection device towards the charge controller/array
disconnect. 250.120(C) and T250.122.
We have run into the conductor covering rating problemtoo. #4 can be
color coded so you can use black conductor. A reasonable inspector
should allow this for 6 since a lot of the non black coverings are not
holding up as well to sunlight as black. I think NEC2017 takes this
into consideration and allows you to color code because of the superior
performance of black coverings.
Chris
On 4/20/2018 9:00 AM, Dana wrote:
That makes two of us that would like to understand, why #6? I think it dates to
early grounding with grid tie systems.
I remember back to 20+ years ago when the code required that the EGC was the
size of the largest conductor which with 24 volt inverters was OOOO.
----------------------------------------------------------------------------
Dana Orzel Great Solar Works, Inc.
C - 208.721.7003 d...@solarwork.com
Idaho Contractor - # 028765 Idaho PV # 028374
NABCEP # 051112-136 www.solarwork.biz
"Responsible Technologies for Responsible People since 1988"
Please consider the environment before printing this email.
-----Original Message-----
From: RE-wrenches <re-wrenches-boun...@lists.re-wrenches.org> On Behalf Of Dave
Angelini Offgrid Solar
Sent: Thursday, April 19, 2018 3:57 PM
To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
Subject: Re: [RE-wrenches] Looking for insulated #6 bare standoff
Dana, I understand the need to use #6 in exposed places on the earth. I have
had inspectors require the same wire size that is used to the battery. I have
had them require the same size as the array wiring. I have never seen them do
what they are doing to you so thanks for the info.... Be well! --Dave
The bare #8 is an EGC for #10 USE PV wire on the tracker to the array
mounted combiner box.
----------------------------------------------------------------------------
Dana Orzel Great Solar Works, Inc.
C - 208.721.7003 d...@solarwork.com
Idaho Contractor - # 028765 Idaho PV # 028374
NABCEP # 051112-136 www.solarwork.biz
"Responsible Technologies for Responsible People since 1988"
ï Please consider the environment before printing this email.
-----Original Message-----
From: RE-wrenches <re-wrenches-boun...@lists.re-wrenches.org> On
Behalf Of Hilton Dier
Sent: Thursday, April 19, 2018 3:39 PM
To: re-wrenches@lists.re-wrenches.org
Subject: [RE-wrenches] Looking for insulated #6 bare standoff
Would #8 meet code? I thought that exposed ground wire had to be #6
minimum.
Hilton Dier III
Renewable Energy Design
Missisquoi River Hydro LLC
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