Dịch vụ & Phân phốiCâu 95 / 521
A grounded (neutral) service conductor larger than 6 AWG is permitted to be identified by:
a.Green tape at both ends
b.No identification at all
c.Orange marking
d.A continuous white outer finish, or by white/gray marking (such as tape) encircling the conductor at terminations and accessible points
Giải thích
Per 200.6(B), grounded conductors larger than 6 AWG may be identified either by a continuous white or gray outer finish, or by distinctive white/gray marking (like tape or paint) at terminations at the time of installation. Green identifies equipment grounding, and leaving it unmarked or orange (high leg) is incorrect.
Trích dẫn luật: 2023 NEC §200.6Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
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