Always important for me, but this post is for inspectors. I got a call from a builder that a gfi rec. @ panel showed 'false ground' on the inspectors $280 tester. Over the phone I told the builder what to look for, to make sure I had done it right and all looked good. Builder calls insp, who shows up later to say that after reading the tester's manual (Ideal) that it has problems within 15' of the panel. 2 things; know your equipment, and what's the use of a tester like that?
