In a series of posts a while back, it was generally agreed that one
should, to be code compliant, use a "dedicated" grounding screw to
fasten the green wire to a metal gang switch/outlet box.
Also, that using the screw that held the box against a wooden stud was not
Can't find any metal boxes in my local hardware store that comes with a
grounding screw, or does there seem to be a threaded hole for.
Would like to do it correctly.
The boxes I have seen have 2 screws for fastening a clamp against the NM
wire where it enters the
box on one end, and 2 more for a clamp on the other end.
Does it satisfy the code to use one of the screws that is Not holding any NM
wire in place as the "grounding screw" ?