A school has a 3-phase motor with a full-load current of 50A. What is the minimum conductor size required for the motor wiring, according to Article 430.22(C) of the 2026 NEC?

Texas Master exam practice question · Motors & Generators

A school has a 3-phase motor with a full-load current of 50A. What is the minimum conductor size required for the motor wiring, according to Article 430.22(C) of the 2026 NEC?

A6 AWG
8 AWG
C10 AWG
D12 AWG

Exam tip

Always check the specific requirements for motor conductor sizing in Article 430.22(C) of the NEC.

Why B is correct

According to Article 430.22(C) of the 2026 NEC, the minimum conductor size for a 3-phase motor with a full-load current of 50A is 8 AWG. The correct answer is option B.

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A school has a 3-phase motor with a full-load current of 50A. What is the minimum conductor size required for the motor wiring, according to Article 430.22(C) of the 2026 NEC?

A school has a 3-phase motor with a full-load current of 50A. What is the minimum conductor size required for the motor wiring, according to Article 430.22(C) of the 2026 NEC?

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