Churning with voltage and resembling an explosion at the wire factory, the breaker panel exudes mystique. But it's just a big switch, filled with other smaller ­switches, which lead to the switches ...

Q: Several weeks ago, I read your column about installing electrical wiring. I’m curious about circuit breakers. What is the primary purpose of circuit breakers? Are there different types of breakers?

My current circuit breaker box is filled and a few weeks ago I asked if I needed 200-amp service or if I could simply upgrade my 100-amp box.<br><br>Well, three electricians came to my house and said ...