In 200.6 D, the NEC talks about grounded conducters of seperate systems. Basically, I interpited this to say that if two grounded conducters, of different systems (different voltages) , are in the same raceway one must be grey and one must be white. These are the practices around me. Here we use grey for 480 and white for 240 and under. So I guess my question is if my interpritation is correct. That white or grey means nothing of voltage, accoarding to the NEC. Also that they only need to be differentiated when in the same raceway and not the same building.
Grounded conducter identification
- Thread starter lok17
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Re: Grounded conducter identification
You are correct in your interpretation. White and gray are simply recognized as grounded conductors, but not specific to any voltage.
Although it would be highly unlikely to run into it; it was actually legal by definition of the color gray to use it for an ungrounded conductor in the past. Take note of the wording in previous code books of "natural gray"
Roger
You are correct in your interpretation. White and gray are simply recognized as grounded conductors, but not specific to any voltage.
Although it would be highly unlikely to run into it; it was actually legal by definition of the color gray to use it for an ungrounded conductor in the past. Take note of the wording in previous code books of "natural gray"
Roger
- Location
- Illinois
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- retired electrician
Re: Grounded conducter identification
Don
The current code requires that one system grounded conductor be white or gray, but the second grounded conductor must be white with a stripe other than green. The 2002 code does not permit the use of white for one system grounded conductor and gray for the other system grounded conductor when both systems are present within the same raceway or enclosure.
Don
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