Electrician Red Seal · Question
What is the minimum size copper grounding conductor required for a service supplied by #3/0 AWG copper service conductors?
CEC Rule 10-812 and Table 17 dictate the size of the grounding conductor based on the size of the service conductors. For service conductors from #2 AWG up to #
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Question: What is the minimum size copper grounding conductor required for a service supplied by #3/0 AWG copper service conductors?
Answer options:
- #8 AWG ✅ #6 AWG
- #4 AWG
- #2 AWG
Correct answer: #6 AWG
Explanation: CEC Rule 10-812 and Table 17 dictate the size of the grounding conductor based on the size of the service conductors. For service conductors from #2 AWG up to #3/0 AWG copper, a #6 AWG copper grounding conductor is the minimum size required.
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