Thiết bị & Hệ thốngCâu 300 / 521
Which of the following is NOT required to be marked on a motor nameplate by NEC 430.7?
a.Rated full-load amperes
b.Rated voltage and horsepower (or kW)
c.Rated frequency and number of phases
d.The branch-circuit conductor size to be installed
Giải thích
NEC 430.7 requires the manufacturer, voltage, HP/kW, FLA, frequency, phases, speed, and similar data on the nameplate, but not the field branch-circuit conductor size - that is the installer's design calculation. All other listed items are required nameplate markings.
Trích dẫn luật: 2023 NEC §430.7Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
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