I have a breaker in the main panel that I can hear arcing. I'm assuming that I need to replace this breaker, but the only problem is that I don't know which breaker is bad. When I open the panel, will there be obvious visual evidence of the problem? It's intermittent enough that it's going to be hard to figure it out only by sound. The only diagnostic tool I'll have at my disposal is a meter.
Any suggestions welcome!