Will an arc fault breaker work with a GFCI?

Yes, an arc fault breaker will work with a GFCI, and they are designed to complement each other because they protect against two different hazards, and modern electrical codes often require both protections on the same circuit. An AFCI breaker protects against fires by detecting dangerous arcing in damaged wiring, while a GFCI protects people from electrocution by detecting tiny leaks of current to ground. There are three common ways to use them together. The first and cleanest method is to use a dual function AFCI/GFCI breaker in the panel, which contains both technologies in one device and protects the entire circuit against both arc faults and ground faults with a single TEST button. This is now widely used in kitchens, laundry rooms, and other areas that require both protections under the 2020 and 2023 National Electrical Code. The second method is to use an AFCI breaker in the panel and install GFCI outlets at the locations where ground fault protection is required, such as countertops, bathroom sinks, and outdoors. In this setup, the breaker provides arc fault protection for the wiring, and the outlet provides ground fault protection at the point of use. The third method is to use a GFCI breaker plus AFCI outlets, though less common. The two technologies do not interfere with each other when installed correctly, and having both provides comprehensive safety against both fire and shock.