A residential building is being constructed with a 200A main service. What is the minimum conductor size required for the service cable according to the 2024 IRC?
- A6 AWG
- 8 AWG
- C10 AWG
- D12 AWG
Exam tip
Always refer to the specific conductor size requirements in the IRC for the correct answer.
Why B is correct
According to 2024 International Residential Code 240.21(B), the minimum conductor size for a 200A main service is 8 AWG. A 6 AWG (option a) conductor is not sufficient, and 10 AWG (option c) and 12 AWG (option d) conductors are not required for this application.