A
I have looked for Class of wires in the NEC book, articles in 725, but found nothing about the colors of wires for different voltage levels. Such as 115Vac from the breaker is Black and White, all 115Vac control wiring is RED, all DC control is Blue wires etc. Is there any published wire color standards for inside a control cabinet with PLC's, power supplies, relays etc. If so, where can I find this publication, is there a web site? Bob