Quote Originally Posted by craiga View Post
Said the reason it only tripped on 100% was because any other setting did not draw enough amps to trip the gfci. Just thought this info might be helpful to someone else with a similar problem.
That scares me a little, because the GFCI trips at just a few milliamps, and does so almost instantaneously. I can't come up with an explanation for the time delay, particularly the fact that it took the same time to trip when the breaker was reset. The water is there, the bulb is hot and the dimmer is at whatever temperature it is going to stabilize at. I could see it tripping after 5 minutes the first time, and then much more quickly upon resetting.

Glad it's fixed, but still a puzzler. I would have assumed (incorrectly apparently) that water would have given an instant trip.