I have run into this situation with Home Inspectors for real-estate transactions.
They make a recommendation that a GFCI receptacle on an ungrounded circuit be grounded "in order for the GFCI to fuction properly".
It makes me want to scream.
I believe the ultimate test for the GFCI is the test button itself. It allows the test current to flow around the current sensor through a resistor, thereby creating a low-level imbalance between the 2 lines.
You'll have a hard time trying to convince some people who think they are "all that" with their little tester.
Bill,
This isn't necessarily simple, or safe but...
(Don't try this at home, kids)
On 2 occasions, I have taken an old line cord, jacket stripped about 12" and cut the neutral & ground at the jacket leaving 12" of (unstripped) hot lead.
After testing the GFCI with the button to verify it works, don gloves and drop the hot line into about 1" of water in the sink.
GFCI trips. Case closed. I'm a believer.
[This message has been edited by Redsy (edited 08-09-2002).]
