A wind turbine generator with a rated output of 10 kW is installed on a rural property. The turbine is connected to a single-phase, 120/240V service. What is the minimum conductor size required for the turbine branch circuit, according to 2026 NEC Article 690.31(A)?
- A10 AWG
- B12 AWG
- C14 AWG
- 16 AWG
Exam tip
Always check the rated output and the specific requirements for the conductor size in the NEC.
Why D is correct
According to 2026 NEC Article 690.31(A), the minimum conductor size for a wind turbine generator branch circuit is 16 AWG for systems with a rated output of less than 10 kW. Options a, b, and c are not the correct minimum conductor size for this scenario.