On Oct 5, 3:30*pm, "
wrote:
When using a metal junction box, eg handybox for a switch,
is it acceptable code to:

A - Just ground the metal box and rely on the switch getting
grounded by being fastened to the box

B - Just ground the switch and rely on the box getting
grounded by being fastened to the switch

C - Both must be grounded using wire?

Thanks all.

C) is usually the correct answer; sometimes A) is as well but only if
the switch is listed as self-grounding. Otherwise you have to run
ground to both.

good luck

nate