AFCIs are required to safeguard which type of circuits?

AFCIs, or Arc Fault Circuit Interrupters, are designed to protect against electrical fires caused by arcing faults in electrical wiring. These devices are particularly effective in living areas where people can be present and where the risk of electrical fires is significant.

The requirement for AFCI protection in bedrooms is rooted in safety standards aimed at reducing the risks of electrical fires in places where people sleep. The National Electrical Code (NEC) mandates that all 15- and 20-amp circuits supplying outlets in bedrooms must be protected by AFCIs. The rationale behind this requirement is that bedrooms often contain electrical devices and cords, as well as an increased likelihood of unmonitored activities, which can lead to arcing faults.

By utilizing AFCIs in bedrooms, the potential for electrical fires can be significantly diminished, thereby enhancing safety for occupants. This makes the choice of bedrooms as the correct answer a well-supported outcome of safety-focused electrical design practices.