Thiết bị & Hệ thốngCâu 281 / 521
In a typical motor branch circuit, which sequence correctly lists the components from the supply toward the motor?
a.Branch-circuit short-circuit/ground-fault device, disconnecting means, controller, overload device, motor
b.Motor, overload, controller, disconnect, fuse
c.Overload, motor, controller, disconnect
d.Controller, motor, fuse, disconnect
Giải thích
Article 430 arranges the motor circuit as: branch-circuit short-circuit/ground-fault protection, then the disconnecting means, then the controller, then the overload device, then the motor. The other sequences misplace the protective and control elements.
Trích dẫn luật: 2023 NEC §430.1Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
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