Electrician Red Seal · Question
A construction site is powered by a temporary 120/208 V, 3-phase, 4-wire portable generator. What is the minimum size copper bonding conductor required to connect the generator's non-current-carrying metal parts to the frame of the generator, assuming the generator output is protected by a 100 A main circuit breaker?
According to CEC Table 16, for an overcurrent device rated at 100 A, the minimum size copper bonding conductor required is #2 AWG. This ensures that in the even
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Question: A construction site is powered by a temporary 120/208 V, 3-phase, 4-wire portable generator. What is the minimum size copper bonding conductor required to connect the generator's non-current-carrying metal parts to the frame of the generator, assuming the generator output is protected by a 100 A main circuit breaker?
Answer options:
- #6 AWG
- #4 AWG ✅ #2 AWG
- #1/0 AWG
Correct answer: #2 AWG
Explanation: According to CEC Table 16, for an overcurrent device rated at 100 A, the minimum size copper bonding conductor required is #2 AWG. This ensures that in the event of a ground fault, sufficient current can flow to trip the 100 A overcurrent device.
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