Core TradesCâu 178 / 700
Under typical residential conditions, a 14 AWG copper conductor is generally protected at a MAXIMUM overcurrent device rating of:
a.15 amperes
b.20 amperes
c.25 amperes
d.30 amperes
Giải thích
A 14 AWG copper conductor is normally limited to a 15-amp overcurrent device. 20 amps corresponds to 12 AWG and 30 amps to 10 AWG copper; protecting 14 AWG at those higher ratings would allow the wire to overheat before the breaker trips.
Trích dẫn luật: 2025 CA Electrical Code, Article 240 (Overcurrent Protection)Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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