pool light tripping breaker?
#1

I have a Sta-Rite 500W pool light that is controlled by a Intermatic timer. When the light is switched off it trips the breaker. The breaker does not trip when the light is on, only when it is off. Any ideas? I am assuming that the light fixture needs to be replaced but I am not sure. Thanks.
#3
ged, some history would improve our guesses. Did this work perfectly for years and then one day just fail, with no changes? Or did somebody change something? Or did the origin of the problem coincide with some event?
#5

I turned off the power, pulled the light out of the niche and it was half full of water, so I drained the water out and re-adjusted the gasket and it has worked fine ever since then. Of course this was the day after I was the winning bidder of a new light fixture on ebay. Thanks for the suggestions and advice!