I have had this happen twice now, two different customers. A circuit breaker will not reset, it will snap open, acting like there is a short circuit. In looking for the short circuit, I discovered there were lighting loads turned on. Once these loads were turned off, the breaker will reset fine, and stay set when the lights are switched back on. Once it was a new cutler hammer, the last one was a fairly new GE. I am figuring it is the low resistance of the cold tungsten filaments not allowing the breaker to reset.
The loads were not great, the first time it was a single incandescent bulb, this last one was three cans. The only thing both had in common were 3 way switching, but I can't see how that would matter. Any ideas or anyone else experience this??
Last edited by BigB; 09/09/07 09:35 PM.