Electrician Red Seal · Question
An electrician is installing a service entrance for a new single-family dwelling. The service conductors are 2/0 AWG aluminum and will be run in rigid PVC conduit for 1.8 metres (6 feet) from the meter base to the service disconnecting means. What is the minimum size of copper bonding conductor required for this service according to the Canadian Electrical Code (CEC)?
CEC Table 16 specifies the minimum size of bonding conductors. For service conductors of 2/0 AWG aluminum, the equivalent ampacity (based on Table 16, column fo
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Question: An electrician is installing a service entrance for a new single-family dwelling. The service conductors are 2/0 AWG aluminum and will be run in rigid PVC conduit for 1.8 metres (6 feet) from the meter base to the service disconnecting means. What is the minimum size of copper bonding conductor required for this service according to the Canadian Electrical Code (CEC)?
Answer options: ✅ 6 AWG copper
- 8 AWG copper
- 4 AWG copper
- 10 AWG copper
Correct answer: 6 AWG copper
Explanation: CEC Table 16 specifies the minimum size of bonding conductors. For service conductors of 2/0 AWG aluminum, the equivalent ampacity (based on Table 16, column for maximum rating or setting of overcurrent device or ampacity of service conductors) is between 150 A and 200 A. The minimum size of bonding conductor for this range is 6 AWG copper. This rule helps ensure proper fault current path to rapidly clear ground faults.
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