General exam question G0B03
Subelement G0, ELECTRICAL AND RF SAFETY· Group G0B
Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?
- A.30 amperes
- B.25 amperes
- C.20 amperes
- D.15 amperes (correct answer)
WhyA 15-ampere fuse or circuit breaker is appropriate for a circuit that uses AWG number 14 wiring. The National Electrical Code pairs AWG 14 wiring with a 15-ampere fuse or breaker, sized so the protective device trips before the wire itself is pushed past its safe current-carrying capacity, answer D. The higher ratings in A, B, and C would let more current flow through AWG 14 wire than it can safely handle before the breaker would trip.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2023-2027 NCVEC Element 3 pool (public domain); the explanation above is original writing, see our methodology.
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