What Causes An Arc Fault Circuit Breaker To Trip

By | October 26, 2021



When it comes to electrical safety, nothing is more important than having an arc fault circuit breaker in your home. An arc fault circuit breaker (AFCI) is designed to detect and interrupt dangerous electrical arcs that can lead to fires. This technology is invaluable when it comes to protecting your home and family from the dangers of an electrical fire.

However, it's not uncommon for homeowners to experience an AFCI tripping, which can be both confusing and alarming. In order to prevent future trips and ensure the safety of your home, it's important to understand what causes an AFCI to trip in the first place. Here, we'll take a look at the top four reasons why an AFCI trips and how you can prevent them from occurring.

An AFCI trip is caused by an unexpected current surge or ground fault in the circuit. This current surge can be caused by a number of factors, such as a short circuit, a loose wire, or an overloaded circuit. When the AFCI senses this surge, it trips to interrupt the flow of electricity and protect your home from a potential fire hazard. It's important to note that AFCIs are sensitive and may trip even with small current surges.

Another common cause of AFCI trips is an issue with the breaker itself. If there is a manufacturing defect or a fault in its operation, the AFCI may trip unexpectedly. Fortunately, these issues can usually be easily diagnosed and repaired by a qualified electrician. Additionally, AFCIs should be periodically tested to ensure they are working correctly and are up to code.

Thirdly, AFCI trips may be caused by a problem in the wiring of the circuit. Over time, wiring can become loose, frayed, or worn out, which can create an arc. As AFCIs are designed to detect and interrupt arcs, they will trip if they sense one, even if it is a minor one. Regularly checking your home's wiring is one of the best ways to avoid AFCI trips.

Lastly, an AFCI trip may also be caused by a problem with the appliance or device on the circuit. If an electrical appliance or device is malfunctioning, it could draw too much current and cause an arc. In this case, the AFCI would trip to protect your home from a potential fire hazard. If you suspect that a particular appliance or device is causing the AFCI trips, have a qualified electrician inspect it.

By understanding what causes an AFCI trip, you can take the necessary steps to prevent them and keep your home and family safe from electrical fires. Check your home's wiring, test your AFCI regularly, and inspect any malfunctioning appliances or devices to ensure that your AFCI is operating correctly and safely.


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