replacing large breakers, how to do it???
the 50amp breaker pair for my AC compressor keeps popping open. It has never done this before last week. I'd like to try the potentially cheap fix of replacing the breaker before calling an AC technician. How difficult (and safe) an operation is this? I've done all sorts of electrical work but never on a breaker box. If I throw the main breaker first, do I avoid the worst danger?