Lập kế hoạch & Dự toánCâu 395 / 521
Branch-circuit conductors supplying a single continuous-duty motor must have an ampacity of at least what percentage of the motor full-load current?
a.80%
b.100%
c.115%
d.125%
Giải thích
Conductors to a single motor must be rated at least 125% of the motor's full-load current (from the NEC tables). Values below 125% would undersize the conductors for motor starting and running duty.
Trích dẫn luật: 2023 NEC §430.22Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
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