We asked an expert to explain all the problems that can cause tripped circuits, how to check your circuit breaker, and when to call a professional.

That will reset the breaker. Once this has been done, it’s a good idea to go back to the problem outlet and test it again. There are two main reasons for a circuit breaker to trip.

Had the breaker been a Ground Fault Interrupter (GFCI) or one of the new AFCIs, would it have tripped? Yes, in a heartbeat plus a smidge. Trip curve A standard CB has what is known as a trip curve.

Outlets and breakers with GFCI, which stands for ground fault circuit interrupter, monitor current flow on the ungrounded (the hot) and the grounded conductor (the neutral).

Why do you say sump pump motors can wreak havoc with GFCIs? I followed the pump manufacturers instructions to install a GFCI and the NEC requirements for a GFCI in a wet location.

In the early 1970s, the National Electrical Code began to require GFCI outlets or a GFCI circuit breaker for all residential exterior outlets near the ground.

Circuit breakers are designed to keep you and your family safe from fire, but one brand of breaker might not only fail to protect your family – it could actually cause a fire.

Ground-fault circuit interrupters are usually found in the kitchen, baths, garage and outdoors. A new GFCI will cost less than $20 and take about 30 minutes to install.

A. As outlined in Sec. 422.5(A), the following appliances rated 150 volts-to-ground or less and 60A or less must be GFCI protected by Class “A” protective device(s) [Sec. 422.5(B)]. (1) Automotive ...

Q. What are the NEC requirements for GFCI protection of branch circuit receptacles in dwelling units? A. Ground-fault circuit interruption protection, located in a readily accessible location, must be ...

We asked an expert to explain all the problems that can cause tripped circuits, how to check your circuit breaker, and when to call a professional.