Maybe someone can help me. Where in the N.E.C. does it mandate that a branch circuit supplied with type NM cable, the grounded conductor has to be insulated. A person ran a branch circuit an used the bare ground conductor as a grounded conductor. I know about 250. 140(3), but past that where does the N.E.C. mandate insulation on the grounded conductor for a branch circuit?
Thanks
Porterh
Thanks
Porterh