Electrician Red Seal · Question
A residential electrician is installing a new 200 A service. The main water pipe entering the building is metallic and accessible. According to the Canadian Electrical Code (CEC), what is the minimum acceptable size for the bonding conductor to this water pipe?
For a 200 A service, Table 16A of the CEC indicates a minimum bonding conductor size of No. 4 AWG copper when connecting to a water pipe. This ensures that the
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Question: A residential electrician is installing a new 200 A service. The main water pipe entering the building is metallic and accessible. According to the Canadian Electrical Code (CEC), what is the minimum acceptable size for the bonding conductor to this water pipe?
Answer options:
- No. 6 AWG copper ✅ No. 4 AWG copper
- No. 2 AWG copper
- No. 1/0 AWG copper
Correct answer: No. 4 AWG copper
Explanation: For a 200 A service, Table 16A of the CEC indicates a minimum bonding conductor size of No. 4 AWG copper when connecting to a water pipe. This ensures that the conductor can safely carry fault currents.
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