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
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