Advanced WiringCâu 70 / 110
Two 10-HP, 460-V motors (14 A each) are supplied by one feeder. What minimum feeder conductor ampacity is required?
a.28 A
b.31.5 A
c.35 A
d.25 A
Giải thích
125% of the largest motor plus the other: (14 x 1.25) + 14 = 17.5 + 14 = 31.5 A.
Trích dẫn luật: 2023 NEC 430.24Luyện miễn phí toàn bộ 110 câu hỏi — không cần đăng ký.
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