Mạch nhánh & Đi dâyCâu 159 / 521
Raceways, cable assemblies, boxes, and fittings must be securely fastened in place. Support wires that do not provide secure support are permitted only if what condition is met?
a.They are painted
b.They are copper
c.They are at least 12 gauge
d.An independent means of secure support is provided
Giải thích
Section 300.11(A) requires electrical wiring to be securely fastened and prohibits using ceiling-support wires unless an independent means of secure support is provided. The color, metal type, or gauge of a wire does not by itself satisfy the secure-support requirement.
Trích dẫn luật: 2023 NEC §300.11(A)Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- For equipment rated 1200 amperes or more and over 6 ft wide containing overcurrent devices, how many entrances of adequate size are required to give access to the working space?
- The dedicated equipment space above a panelboard indoors extends from the top of the equipment to what height, or to the structural ceiling if lower?
- At each conductor splice point, outlet, switch point, or junction in a raceway or cable system, what must generally be installed?
- 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 125-volt receptacle located within 6 ft of the outside edge of a bathtub or shower stall in a dwelling requires what protection?
- Under 210.8(F), outdoor outlets for dwellings supplying equipment such as air-conditioning condensers, rated 150 volts or less to ground and 60 amperes or less, generally require what?
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