What is the main purpose of an AFCI breaker?

An AFCI (Arc Fault Circuit Interrupter) breaker is specifically designed to enhance electrical safety by preventing arc faults, which can create a significant fire hazard. Arc faults occur when there is an unintentional arc caused by damaged wires, loose connections, or other electrical issues. These arcs can produce high temperatures and ignite surrounding materials, leading to potential fire outbreaks.

By detecting these arc faults, an AFCI breaker can interrupt the circuit and stop the flow of electricity, thereby reducing the risk of fires caused by such faults. This functionality is particularly essential in residential environments where the prevalence of combustible materials increases the likelihood of fire hazards.

The other options are aimed at functionalities that do not relate specifically to the primary role of AFCI breakers. While increasing current flow, detecting ground faults, and controlling circuit voltage may be essential aspects of different electrical components, they do not pertain to the specific duty of an AFCI breaker, which is to enhance fire safety by preventing arc-related incidents.