Electrician Red Seal · Question
A licensed electrician is installing a new 200 A service entrance for a single-family dwelling. According to the Canadian Electrical Code (CEC), what is the minimum acceptable size for the copper bonding conductor connecting the service neutral to the grounding electrode system if the service conductors are 3/0 AWG copper?
CEC Rule 10-612(1)(a) requires the bonding conductor for services to be sized according to Table 16, based on the service conductor size. For 3/0 AWG copper ser
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Question: A licensed electrician is installing a new 200 A service entrance for a single-family dwelling. According to the Canadian Electrical Code (CEC), what is the minimum acceptable size for the copper bonding conductor connecting the service neutral to the grounding electrode system if the service conductors are 3/0 AWG copper?
Answer options:
- No. 6 AWG copper
- No. 4 AWG copper ✅ No. 2 AWG copper
- No. 1/0 AWG copper
Correct answer: No. 2 AWG copper
Explanation: CEC Rule 10-612(1)(a) requires the bonding conductor for services to be sized according to Table 16, based on the service conductor size. For 3/0 AWG copper service conductors, Table 16 specifies a minimum No. 2 AWG copper bonding conductor. A No. 6 AWG copper conductor would be suitable for a smaller service, typically up to 100 A with No. 2 AWG copper service conductors.
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