Has this already been installed? Do you have any good reason to make it some color other than white or gray?Īlso, please note that if this is factory-installed wiring located in a switchboard, then most likely the wiring is type SIS, which is ALWAYS gray in color, and factory wiring does not fall under the scope of the NEC.Īnd "wahala-wasahala", or however you say "welcome" in Saudi Arabia (that one phrase constitutes my entire Arabic vocabulary). Your best bet is probably to call up your local inspector or plan reviewer, and see what he thinks. Unfortunately, I've always found 725 to be a very difficult article to read/understand/apply. give specific details about wire colors etc as each transformer uses a different color code. ![]() And even then, I think it could possibly be interpreted either way. Wire a 3 way header to your AC power transformer secondary. ![]() That said, I can't find anything in the NEC that would permit you're neutral to be any color but white or gray (grey?). This is considered Class 1 control wiring per NEC 725. ![]() You're routing from a CT cabinet or similar, via conduit or similar, to some remote devices.ģ. Sometimes RV makers change that standard and use the colors black and white with white being negative or ground. This is not factory-installed wiring, and it's not all contained within a switchboard. The standard colors for 12 volt electrical systems are red is positive and black is negative. This is field-installed wiring, routed outside of a switchboard.
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