Mạch nhánh & Đi dâyCâu 168 / 521
Rigid polyvinyl chloride conduit (PVC) is permitted to be used in which of the following locations?
a.Wet locations and direct burial where listed
b.Only in dry indoor locations
c.Only where exposed to sunlight
d.Only inside metal enclosures
Giải thích
Section 352.10 permits rigid PVC conduit in wet locations, corrosive environments, concealed work, and direct burial where properly listed and assembled. Restricting it to dry indoor use, sunlight-only, or inside metal enclosures misstates its permitted uses. PVC is widely used underground for branch-circuit feeders.
Trích dẫn luật: 2023 NEC §352.10Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- A 125-volt, 15- or 20-ampere receptacle outlet for servicing must be installed within what distance of heating, air-conditioning, and refrigeration equipment?
- Bends in electrical metallic tubing (EMT) must be made so that which of the following is true?
- Direct-buried conductors or cables emerging from grade must be protected by enclosures or raceways from the required cover depth up to what height above finished grade?
- Electrical metallic tubing (EMT) is generally not permitted to be used in which condition?
- Liquidtight flexible metal conduit (LFMC) is especially suited for which of the following uses?
- Rigid metal conduit (RMC) is permitted to be used under which of the following conditions?
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