Originally Posted By: jtedesco
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A two gang metal box has two, 12/2, W/G NM-B cables, connected to a receptacle, that are part of a 20 ampere branch circuit, and two 14/2, W/G NM-B cables, connected to a switch, that are part of a 15 ampere lighting branch circuit.
The two equipment grounding conductors, of the 15 ampere circuit are joined together with a suitable splicing device, and the two equipment grounding conductors of the 20 ampere circuit are also joined together with a suitable splicing device.
Question: Are the equipment grounding conductors also required to be joined together?
Joe Tedesco, NEC Consultant