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Electrician Red Seal · Question

A journeyperson electrician is installing a new 200 A, 120/240 V, single-phase service for a residential detached dwelling. According to CE Code Rule 4-004, what is the minimum trade size (nominal diameter) for the bonding conductor for this service?

For a 200 A service, CE Code Table 16 specifies a minimum No. 4 AWG copper conductor for the bonding conductor. This ensures adequate capacity to handle fault c

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Question: A journeyperson electrician is installing a new 200 A, 120/240 V, single-phase service for a residential detached dwelling. According to CE Code Rule 4-004, what is the minimum trade size (nominal diameter) for the bonding conductor for this service?

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, CE Code Table 16 specifies a minimum No. 4 AWG copper conductor for the bonding conductor. This ensures adequate capacity to handle fault currents.

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