As far as I understand it doesn't matter which color you use for which conductor as long as it isn't white, gray, or green.
We have different crews using different colors but I think black and either blue or red is the most common. Thanks, Will From: [email protected] [mailto:[email protected]] On Behalf Of Allan Sindelar Sent: Friday, June 28, 2013 2:10 PM To: RE-wrenches Subject: Re: [RE-wrenches] double insulated wire On 6/28/2013 11:47 AM, [email protected]<mailto:[email protected]> wrote: And of course Red for positive and black for negative. Most building departments have not pick up on this yet. But they will. Aram Where does "of course Red for positive and black for negative" come from, please? I only know it as an automotive standard that has often caused confusion when used by DIY offgridders in years past, as black thus could represent either positive or negative in a DC conductor pair. Is there yet a convention for ungrounded arrays? While red and black are technically correct as ungrounded current-carrying conductors, use of this color convention could cause as much confusion as resolve it in the future. How about "black and black" or for that matter "yellow and orange" (if supplied by manufacturers) for ungrounded arrays? Thanks, Allan Allan Sindelar [email protected]<mailto:[email protected]> NABCEP Certified PV Installation Professional NABCEP Certified Technical Sales Professional New Mexico EE98J Journeyman Electrician Founder and Chief Technology Officer Positive Energy, Inc., a Certified B CorporationTM 3209 Richards Lane Santa Fe, New Mexico 87507 505 424-1112 office 780-2738 cell www.positiveenergysolar.com<http://www.positiveenergysolar.com/>
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