Core TradesCâu 77 / 700
Temporary power on a construction site uses receptacles that workers plug tools into. To protect workers from shock, these 125-volt receptacles must be protected by:
a.Ground-fault circuit-interrupter (GFCI) protection
b.Arc-fault protection only
c.A time-delay fuse only
d.A surge protector
Giải thích
Temporary construction receptacles used by personnel require GFCI protection to guard against ground-fault shock hazards in wet, rough field conditions. Arc-fault devices protect against arcing faults (fire), not shock; fuses and surge protectors do not provide personnel ground-fault protection.
Trích dẫn luật: 2025 CA Electrical Code (based on NEC)Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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