Electrician Red Seal · Question
A 15 kVA, 600V to 120/240V single-phase transformer is installed. What is the minimum size of copper bonding conductor required for the transformer case if the primary circuit is protected by a 30A breaker?
According to CEC Table 16, the size of the equipment bonding conductor is based on the rating of the overcurrent device protecting the circuit. For a 30A overcu
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Question: A 15 kVA, 600V to 120/240V single-phase transformer is installed. What is the minimum size of copper bonding conductor required for the transformer case if the primary circuit is protected by a 30A breaker?
Answer options: ✅ #10 AWG
- #8 AWG
- #6 AWG
- #4 AWG
Correct answer: #10 AWG
Explanation: According to CEC Table 16, the size of the equipment bonding conductor is based on the rating of the overcurrent device protecting the circuit. For a 30A overcurrent device, a #10 AWG copper bonding conductor is required.
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