GFI Breaker Trips With No Load
I'm having problems with a GFI circuit that was installed five years ago. The GFI breaker is installed in the panel box and controls seven outlets. The circuit worked fine until a few days ago when it started tripping off. I thought I had a bad lamp or other appliance plugged into the circuit. So I started unplugging each appliance one at a time. I unplugged everything and the GFI tripped with no load on the circuit. With no load I can turn the GFI on and in 30min to one hour it will trip off. It doesn't trip immediately. This continued for a day and a half. Then today for no apparent reason the breaker stayed on and has been on for 10 hours. Do I have a bad GFI breaker, bad outlet or bad wire? Any help would be appreciated.