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?

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?

Forbes contributors publish independent expert analyses and insights. I write about how to do more with your consumer gadgets. Circuit breakers, breaker panels, breaker boxes, fuse boxes—no matter ...

Moving into a new house is equal parts thrilling adventure and unsettling mystery. You’re taking on a space crammed with unknowns, some of which won’t manifest until you’re comfortably settled. We try ...