It is my understanding that 2014 NEC will require red-positive, black-negative, white-grounded conductor for all DC wiring. Remarking still allowed for larger than #6. I have also heard that some modules will soon come with one black and one white lead.
---------- Shine On! Kris Schmid Legacy Solar, LLC 864 Clam Falls Trail Frederic, WI 54837 715-653-4295 www.legacysolar.com NABCEP Certified PV Installer Licenced Wisconsin Master Electrician BSEE On Jul 3, 2013 11:46 AM, "Chris Mason" <cometenergysyst...@gmail.com> wrote: > So now I have to stock coloured PV Wire? > > > On Tue, Jul 2, 2013 at 6:49 PM, jay peltz <j...@asis.com> wrote: > >> HI Ray, >> >> I agree and think that at least high voltage DC should have its own color >> code. >> Labels go away, but wire colors are forever. >> >> thanks, >> >> jay >> >> peltz power >> >> >> On Jul 2, 2013, at 11:15 AM, Ray Walters wrote: >> >> > Hi Dick; >> > >> > What you're suggesting is actually something I thought would work too: >> having totally odd colors that immediately said DC. >> > IT really would be the best, because if you go in with a meter set to >> read AC, and show no voltage, then get your voltage sniffer out, and it >> doesn't beep, you think you're double safe, when actually you could get hit >> with 500 v dc. >> > >> > I try and mark every J-box that has DC conductors in it with the DC >> voltage. The life I save probably will be my own, as I'm getting more >> forgetful with age...... >> > >> > I think one of the problems is that this is actually not a NEW issue; >> we are reviving the 100+ year old AC vs DC battle that Edison >> Westinghouse, and Tesla, et al. fought before. Factories have AC and DC on >> site, and it just amazes me that marking polarity isn't required by code. >> We have to mark the bonded conductor, or the high leg in certain 3 phase >> systems, so identifying DC polarity seems just as important. >> > I actually really like your purple with a white stripe idea. At one >> time I tried to color code for DC voltage too, (Red for 12 v, purple for >> 24, Orange for 48 v) and even used yellow tape for my PV inputs as they had >> a higher V than the battery. Now I just try to label everything copiously, >> and have polarity align with my meter. >> > My biggest problem is still old 12 v house wiring on Romex (white and >> black) or which side of those Monkey face outlets should be + or - ...... >> These days, I just try to switch the circuit over to AC (go Tesla!) >> > >> > R.Ray Walters >> > CTO, Solarray, Inc >> > Nabcep Certified PV Installer, >> > Licensed Master Electrician >> > Solar Design Engineer >> > 303 505-8760 >> >> _______________________________________________ >> List sponsored by Home Power magazine >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out participant bios: >> www.members.re-wrenches.org >> >> > > > -- > Chris Mason > President, Comet Systems Ltd > www.cometenergysystems.com > Cell: 264.235.5670 > Skype: netconcepts > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Change email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > >
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