"ScottW" wrote in message
news:Z3jTf.138830$0G.36110@dukeread10...

"Robert Morein" wrote in message
...

"ScottW" wrote in message
news:FnhTf.138824$0G.125505@dukeread10...

"Robert Morein" wrote in message
...

"François Yves Le Gal" wrote in message
...
On Sun, 19 Mar 2006 12:05:23 -0500, "Robert Morein"

wrote:

Francois, are you perhaps misphrasing this? A GFCI is effective only
if it
is connected to a mains circuit with a 3rd wire ground.

Nope, a GFCI is basically a breaker. Re-read NEC 406.3(D)(2)
regarding the
installtion of GFCI's in a "No Equipment Ground" context. It works
with or
without a grounding wire.

Impossible. A GFCI senses current on the ground. Without a valid 3rd
wire, it has no way to differentiate between normal mode from hot to
neutral, and leakage to ground.

Actually they sense the current difference between hot and neutral.
Any significant difference and they trip.
U/L only allows something like 10% of the power to leak into the Ground
line if it exists.

So a GFCI will work on a 2 prong device.

http://www.codecheck.com/gfci_principal.htm

I don't agree that its a good idea to use cheater plugs...ever.
There are other ways to solve ground loops.

ScottW
Hey, Scott, it's your choice if you want to suffer.

Only thing I'm suffering is your ignorance.
Enjoy your wiring nightmare....oh yes, and in the event
of fire...be sure not to let the insurance company know what
you did... they kind of frown on stuff like that.

ScottW
Anybody ever hear of a hifi amplifier causing a house fire? If so, how many
in thirty years?