Mạch nhánh & Đi dâyCâu 240 / 521
Per 200.6(B), how may a grounded (neutral) conductor larger than 6 AWG be identified?
a.It must be manufactured with white insulation only
b.By wrapping green tape at each end
c.By orange insulation
d.By white/gray insulation, or by distinctive white/gray markings (such as tape) at each termination and accessible point
Giải thích
Section 200.6(B) allows grounded conductors larger than 6 AWG to be white or gray, or to be marked with distinctive white or gray encircling identification at terminations and where accessible. Green is for grounding and orange indicates a high leg, so neither identifies a neutral.
Trích dẫn luật: 2023 NEC §200.6(B)Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- If the one-way length of a circuit run is doubled while current and conductor size stay the same, what happens to the voltage drop?
- Per 200.6(A), a grounded (neutral) conductor 6 AWG or smaller must be identified by which of the following?
- Per 250.119, an equipment grounding conductor may be identified by which of the following?
- Per 110.15, on a 4-wire delta-connected 120/240 V system, the high-leg (the conductor with the higher voltage to ground) must be identified by what color?
- Which set of colors is NOT permitted for ungrounded (hot) conductors, because these colors are reserved for other uses?
- Per 210.5(C), where a building is supplied by more than one nominal voltage system, how must the ungrounded branch-circuit conductors be treated?
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với California CSLB C-10 Electrical Trade Examination · Quy trình kiểm tra