Branch Circuits & Feeders第 19 / 120 题
Arc-fault circuit-interrupter protection is required for 120-volt, single-phase, 15- and 20-ampere branch circuits supplying outlets in which dwelling unit areas?
a.Kitchens, laundry areas, bedrooms and most other habitable rooms
b.Bedrooms only
c.Unfinished basements and garages only
d.Bathrooms and outdoor areas only
解析
The AFCI requirement now reaches nearly every habitable area of a dwelling, including kitchens and laundry areas, not just bedrooms as in older code cycles. Bathrooms, garages and unfinished basements are the spaces typically addressed by GFCI rules instead, so limiting AFCI to those areas reverses the two protection schemes.
法律依据: 2023 NEC §210.12(A)免费刷完整 120 道题库 — 无需注册。
同考点相关题目
- Where must a multiwire branch circuit have a means to simultaneously disconnect all ungrounded conductors?
- In a dwelling unit living room, no point measured horizontally along the floor line of any wall space may be more than what distance from a receptacle outlet?
- In a dwelling unit, 125-volt receptacles installed within what distance of the outside edge of a sink require GFCI protection?
- A 277-volt feeder supplies three continuous lighting loads of 12, 15 and 18 amperes. What is the minimum standard feeder overcurrent device rating?
- For that same 45-ampere continuous lighting feeder, what is the minimum copper conductor size at 75 degrees C terminations?
- What is the smallest conductor size generally permitted to be installed in parallel?