Is it possible for a GFI circut breaker to wear out. I have one that keeps tripping. I have tested all the circuts on it with a circut tester and all is ok no grounds or leakage. It is 20A circut mostly bathroom (lights 3, plugs), kitchen pulgs. It always the GFI that trips not the breaker?
Also I found that the plugs in the bathroom, are also GFI plugs and they are on a GFI circut, (house came this way) seems strange can this cause the problem?
House was built in late 70"s and for I have found many things that are not at code, like running a line behind base molding to add a new plug. I found this when I was remodling the bathroom so this was corrected. Straneg thing on this si that it trip[s when nothing is being used!