Code Admin & SafetyCâu 99 / 110
The dedicated equipment space above a panelboard extends how far above the equipment (or to a structural ceiling if lower)?
a.3 ft
b.4.5 ft
c.6 ft
d.7 ft
Giải thích
The dedicated electrical space extends from the equipment to 6 ft above it, or to a structural ceiling if lower, and must be kept clear of foreign systems.
Trích dẫn luật: 2023 NEC 110.26(E)(1)Luyện miễn phí toàn bộ 110 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- For equipment operating at 0-150 V to ground under Condition 1, what is the minimum depth of working space in front of the equipment?
- What is the minimum required width of working space in front of electrical equipment?
- What is the minimum headroom (height) of working space about electrical equipment such as panelboards?
- Equipment rated at what current or more requires two entrances to and egress from the working space when the space is large or contains overcurrent devices?
- For a circuit rated 100 A or less, conductor ampacity is generally based on which temperature column unless the equipment is listed otherwise?
- For circuits rated over 100 A, conductor ampacity for terminations is generally based on which temperature column?
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