A residential dwelling has a 120V, 15A circuit. What is the minimum size of the arc-fault circuit interrupter (AFCI) required for this circuit?
- 15A
- B20A
- C30A
- D40A
Exam tip
Ensure the AFCI is rated for the same current as the circuit it is intended to protect.
Why A is correct
According to 210.12(A)(2), the AFCI must be rated at the same current as the circuit it protects, which in this case is 15A.