With the lightbulb removed, the outlet does not trip when I flip the
hall light switch (not that I know what that indicates).

With regard to your other question, the answer is (1) "cannot reset
while the hall light switch is on and the hall lights are off".

I've pulled from the wall/ceiling each switch, light, outlet, etc. (all
at the same time), to make sure that no ground wire is touching the
base unit, but to no avail... flipping the light switch for the hall
(with a light bulb present) trips the GFCI outlet. I've gone back
through the manufactures directions for hooking up and have (afaik) the
correct wires connected to the correct nodes on the outlet.

Ugh.

peter wrote:
"Rampy" wrote in message
ups.com...
I installed a GFCI outlet in a hall bathroom, following the
manufacturers instructions for determining which of the two sets of
wires were load vs. line. The install and testing seemed to go o.k.,
however when I turn on the hall light the outlet immediately trips. I
can turn off the light and reset the outlet, but can't reset while the
hall light is on. Is it possible that the load is too much for the 15
amp GFCI outlet? Or is it more likely that I have something miswired?

Here's an easy test that would provide some new info:

Remove all lighbulbs controlled by the hall light switch. Now switch on the
hall light switch and does the GFCI still trip?

Other than the hall lights, are there other receptacles downstream of the
GFCI? If so, you can do additional testing there.

When you say "cannot reset when the hall light is on", do you mean:
(1) cannot reset while the hall light switch is on and the hall lights are
off
(2) cannot reset while the hall light switch is on and the hall lights are
also on!??