What standard must be followed when handling arc-fault circuits?

Handling arc-fault circuits requires the use of an arc-fault circuit interrupter (AFCI) as a standard practice. An AFCI is designed to protect against electrical fires caused by arcing faults in electrical wiring. These interrupters detect the signature of arcing conditions and automatically disconnect the circuit before any sustained heat or potential fire hazards can occur.

AFCIs are specifically mandated in the National Electrical Code (NEC) for certain circuits, particularly in living spaces such as bedrooms and other areas where the risk of arc faults is higher. The inclusion of AFCIs in residential wiring helps to enhance safety and ownership responsibility for homeowners, as well as encouraging proper installation practices.

The other options do not address the specific requirement for arc-fault circuits. While annual inspections, use of GFCIs, and licensed electricians are important considerations for electrical safety and installation, they do not specifically apply to the protection of arc-fault circuits in the same way that AFCIs do. Hence, the clear requirement to use an AFCI makes it the correct choice.