Mạch nhánh & Đi dâyCâu 129 / 521
Which protection is required for 120-volt, 15- and 20-ampere branch circuits supplying receptacle outlets in dwelling bedrooms?
a.GFCI only
b.AFCI
c.Surge only
d.None
Giải thích
Section 210.12(A) requires arc-fault circuit-interrupter (AFCI) protection for 120-V, 15- and 20-A branch circuits supplying outlets in dwelling bedrooms and many other living areas. AFCI protects against arcing faults that can start fires. GFCI addresses shock, not arcing; surge and 'none' do not meet the rule.
Trích dẫn luật: 2023 NEC §210.12(A)Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Receptacles installed in a dwelling attached garage at 125 volts, 20 amperes must be provided with what protection?
- Under 210.8(A), outdoor receptacles at a dwelling rated 125 volts, 20 amperes generally require what protection?
- Under 210.8(A), a 125-volt, 20-ampere receptacle that serves a dwelling kitchen countertop surface requires what protection?
- In a dwelling bathroom, at least one receptacle outlet must be installed within what distance of the outside edge of each basin?
- For a one-family dwelling, how many outdoor receptacle outlets are required, and where?
- In a dwelling, a hallway of what length or more must have at least one receptacle outlet?
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