Arc fault circuit interrupters or AFCIs serve an important purpose: they prevent electrical fires caused by wiring problems. An AFCI detects electric arcs, breaking the circuit before trouble arises.

Add Yahoo as a preferred source to see more of our stories on Google. An older couple taking a look at their circuit breaker box - Coldsnowstorm/Getty Images Circuit breakers can be frustrating.

Circuit breakers, despite any techy magic happening beneath the surface, should be the most predictable things in the world. If they encounter a ground fault or an overcurrent/overload situation (or ...

Branch circuits are undoubtedly the most commonly installed circuits in both residential and non-residential applications. And, since they supply the equipment that utilizes the electricity, they are ...