Mạch nhánh & Đi dâyCâu 174 / 521
In a commercial (other than dwelling) building, a 125-volt, 20-ampere receptacle installed in a bathroom must have what protection?
a.AFCI only
b.No protection
c.GFCI
d.Surge only
Giải thích
Section 210.8(B) requires GFCI protection for 125-V through 250-V receptacles in non-dwelling bathrooms, kitchens, rooftops, and similar locations. AFCI is not the specified requirement here; 'no protection' and surge-only leave the shock hazard unaddressed.
Trích dẫn luật: 2023 NEC §210.8(B)Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
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