Thiết bị & Hệ thốngCâu 255 / 521
A motor control circuit tapped from the load side of the motor branch-circuit protection is generally protected against overcurrent according to which NEC provision?
a.Article 240 only
b.Table 430.52
c.NEC 430.72 (motor control circuits)
d.Article 450
Giải thích
NEC 430.72 and Table 430.72(B) govern overcurrent protection of motor control circuit conductors, including tapped control conductors. Table 430.52 covers motor branch-circuit (power) protection, Article 240 covers general circuits, and Article 450 covers transformers.
Trích dẫn luật: 2023 NEC §430.72Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
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