An toànCâu 477 / 521
Flexible cords and extension cords used on a construction site must be:
a.Repaired with electrical tape over any cuts
b.Run through doorways where they can be pinched shut
c.Of the hard-service or extra-hard-service type, include an equipment grounding conductor, and be inspected and free of damage
d.Ordinary 16 AWG lamp cord for lighter tools
Giải thích
Jobsite cords must be hard- or extra-hard-service rated, contain a grounding conductor, and be inspected and undamaged. Taping over cuts, pinching cords in doorways, or using light lamp cord all create shock, ground-fault, and fire hazards and are not acceptable.
Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Immediately after you open a disconnect switch, all the conductors on the load side should be treated as:
- On de-energized conductors or equipment where accidental re-energization or induced voltage is possible, workers protect themselves by applying:
- In a dwelling, 125-volt 15- and 20-ampere receptacles must be GFCI-protected in which of the following groups of locations?
- What is the fundamental difference between AFCI and GFCI protection?
- As an alternative to GFCI protection on certain construction-site receptacles, an employer may instead implement:
- Which set of actions best establishes an 'electrically safe work condition' before hands-on work begins?
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Đội Ngũ Biên Tập PrepPass · Đối chiếu với California CSLB C-10 Electrical Trade Examination · Quy trình kiểm tra