Mạch nhánh & Đi dâyCâu 160 / 521
When counting conductors for box fill in a device box, each 14 AWG current-carrying conductor that originates outside the box and terminates or is spliced within it counts as how many conductors?
a.One
b.Two
c.One-half
d.Zero
Giải thích
Section 314.16(B)(1) counts each conductor that runs through the box or terminates in it as one conductor for box-fill volume. A 14 AWG conductor entering and terminating counts as one at 2.0 cubic inches. Counting it as two, one-half, or zero would misapply the box-fill calculation.
Trích dẫn luật: 2023 NEC §314.16Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
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