Thread: Sub Panel

What year did nec. mandate four wires for a sub panel, residential wiring
Thanks

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Don't have answer for your question but I'd like to clarify. Perhaps it would be better to say four conductors. In our area most wiring is in metal conduit which serves as a conductor. So for subpanel, three wires in conduit would suffice.

Hmmm ... I'm having trouble finding the term "subpanel" or "sub panel" in my 2002 NEC ...
Maybe Jerry P. knows something about this ...

We have a trouble maker here.

I resemble that remark.

make the bad man go away....

Evil. Pure evil.

I've only seen one "sub panel", it was in a "submarine", so it *was* a "sub panel".

The question, I think, is when did the NEC require the neutral to be bonded 'only at' the "service equipment".

Without going back and checking through my old codes, I'm guessing that it was 'aways' that way, just not clearly stated as such. I' think I recall that the wording was clarified in the 1920s, with continued clarification in subsequent codes as needed, ending up with the current wording.

Regardless, though, of when the code clarified the wording, it is not safe and should be written up when found - however old the house is.

Okay, who are you and what have you done with Jerry? If you hurt him, we'll hunt you done like dogs.