Code Admin & SafetyCâu 101 / 110
For a circuit rated 100 A or less, conductor ampacity is generally based on which temperature column unless the equipment is listed otherwise?
a.60 C
b.75 C
c.90 C
d.105 C
Giải thích
Terminations on equipment rated 100 A or less are based on the 60 C column unless the equipment and conductors are listed for a higher temperature.
Trích dẫn luật: 2023 NEC 110.14(C)(1)Luyện miễn phí toàn bộ 110 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- What is the minimum headroom (height) of working space about electrical equipment such as panelboards?
- The dedicated equipment space above a panelboard extends how far above the equipment (or to a structural ceiling if lower)?
- 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 circuits rated over 100 A, conductor ampacity for terminations is generally based on which temperature column?
- Which standard governs electrical safety-related work practices, including arc-flash and shock protection?
- Under safe electrical work practices, what is the preferred condition before working on or near exposed conductors?
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