An industrial plant has a control circuit that operates at 480V. According to NEC 2026, what is the minimum wire size required for this circuit?
- A14 AWG
- B12 AWG
- 10 AWG
- D8 AWG
Exam tip
Use Table 310.16(B)(1) to determine the minimum wire size for control circuits based on voltage and current.
Why C is correct
The correct answer is 10 AWG because NEC 2026 Table 310.16(B)(1) specifies a 10 AWG wire for a 480V control circuit.