Lectrician wrote on Feb 6th, 2018, 5:56pm:If the back box has one fixed lug (all do these days), then no need to earth the back box. However, the NICEIC still recommend this is done.
I'm trying to get my head around that.
So if you had a metal back box with plastic faceplate are the faceplate mounting screws earthed? Is there always metal on the back of the faceplate that does this?