The only proof you need if you are off the floor is a known earth !
( If your volt stick lights for that , your probably sitting on a live wire in the attic ) .... all results near masses of wiring
MUST be taken with a pinch of salt ..
(capacitive coupling will Light LED lamps and you volt stick !)
( Proving unit for high impedance tester =Waste of money)
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc