Mạch nhánh & Đi dâyCâu 149 / 521
A single receptacle installed on an individual branch circuit must have an ampere rating not less than what value relative to the branch circuit?
a.50 percent of the circuit
b.The rating of the branch circuit
c.125 percent of the circuit
d.No minimum applies
Giải thích
Section 210.21(B)(1) requires a single receptacle on an individual branch circuit to have an ampere rating not less than that of the branch circuit. A 20-A individual circuit therefore needs at least a 20-A receptacle. Half the circuit rating and 'no minimum' are wrong, and 125 percent is not required for the receptacle.
Trích dẫn luật: 2023 NEC §210.21(B)(1)Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
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