How to use a circuit breaker finder to understand your home's wiring (and why it matters so much) I almost paid for new wiring - until this Klein tool showed me the power was already there.

GFCI circuit breakers: installed in the electrical panel of a building, they protect an entire circuit rather than just one outlet.

My friend’s questions were these: was using a GFCI on a receptacle without a true ground just a cosmetic, feel-good thing? Did it provide any protection? Full protection? Was it code approved? Most ...

The multi-wire branch is here to stay; so is ground fault protection. But we should unite these technologies only when it’s a good match.