I keep having a problem with the GFCI tripping and was hoping someone might know what could cause it. I don't see an obvious cause for the tripping because the gear runs for several hours and sometimes days before tripping. During my last (and first) grow it would trip once in a while, a pretty rare event. Towards the end of the grow it started tripping more often. Now I'm starting up a new grow and it seems to trip almost every day. I only have two things plugged into it, a 400w HPS light which is plugged into a timer and a 6" fan. When I reset it everything starts up fine and runs for a while, probably at least a few hours if not longer before tripping again. Any idea what could cause this? Do I have a bad light maybe?