How are arc-fault circuit interrupters (AFCIs) relevant to overcurrent protection?

Arc-fault circuit interrupters (AFCIs) are indeed crucial to overcurrent protection because they are designed specifically to detect unintended electrical arcs that can generate excessive heat and potentially lead to electrical fires. By constantly monitoring the electrical current flowing through a circuit, AFCIs can identify the unique signatures of arcing and disconnect the power before the arcing can escalate into a dangerous situation.

This capability positions AFCIs as an important safety device that enhances the overall protection of electrical circuits, addressing risks related to both overcurrent conditions and fire hazards. They offer an additional layer of safety that complements conventional overcurrent protection devices like circuit breakers, which primarily protect against overloads and short circuits, but not specifically against the dangers posed by arcing faults. Thus, the role of AFCIs in preventing fires caused by arcing underscores their significance in the context of electrical safety and overcurrent protection.