Services & DistributionCâu 34 / 110
A branch circuit is protected by a 100-A overcurrent device. What is the minimum copper equipment grounding conductor?
a.#10 AWG
b.#8 AWG
c.#6 AWG
d.#4 AWG
Giải thích
The equipment grounding conductor table requires #8 Cu for an overcurrent device rating up to 100 A.
Trích dẫn luật: 2023 NEC Table 250.122Luyện miễn phí toàn bộ 110 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- What is the maximum number of service disconnecting means permitted for a single set of service-entrance conductors (each in a separate enclosure)?
- A service uses #2/0 Cu ungrounded conductors. What is the minimum copper grounding electrode conductor?
- Where the grounding electrode conductor connects only to a made ground rod, what is the largest copper conductor size ever required?
- A feeder is protected by a 400-A overcurrent device. What is the minimum copper equipment grounding conductor?
- A service has 500-kcmil Cu ungrounded conductors per phase. What is the minimum copper grounded (neutral) service conductor for bonding purposes?
- Service phase conductors total 1,500 kcmil Cu per phase (over 1,100 kcmil). Using the 12.5% rule, what is the minimum copper main bonding jumper?
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