On Nov 29, 1:06 pm, "Pop`" wrote:

The amount of current on the hot line is the same as that on the
neutral. So as far as the GFI is concerned, there's no ground fault.
It can't tell if it's just the fan motor between hot and neutral, or
the fan motor and you.GFI,

Ground Fault Interruptor is a misnomer. "Ground" in the original case
may have been ground, but now, because of poor terminology, is considered
the Neutral conductor. How a GFCI operates has nothing to do with the
ground. Since it senses differences in current between the hot/neutral
conductors, any third wire earth ground is irrelevant to its opeartion. Hot
amps = Neutral amps, all OK. Not equal, it trips. It's literally that
simple.

Ground Fault is the correct terminology. You don't have to have a
grounding wire to get a ground fault.

Current going to ground on a path other than the neutral causes a
imbalanced load on the neutral.

The white wire is the ground(ed) connector. The third prong and green
wire is the ground(ing) conductor.