Core TradesCâu 179 / 700
In a service panel, the main bonding jumper serves PRIMARILY to:
a.Limit the total number of circuits in the panel
b.Increase the amperage available to the building
c.Reduce the voltage supplied to branch circuits
d.Connect the grounded (neutral) conductor to the equipment grounding system at the service
Giải thích
The main bonding jumper ties the grounded (neutral) conductor to the equipment grounding system at the service, establishing the low-impedance fault path that lets breakers clear ground faults. It has nothing to do with limiting circuits, changing voltage, or increasing available amperage.
Trích dẫn luật: 2025 CA Electrical Code, Article 250 (Grounding and Bonding)Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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