A public assembly building has a 30A, 120/240V disconnecting means. According to NEC 2026, what is the minimum size of the grounding conductor required for this disconnect?
- A6 AWG
- 8 AWG
- C10 AWG
- D12 AWG
Exam tip
Always refer to NEC 250.122(A) for the minimum grounding conductor size for disconnecting means.
Why B is correct
The correct answer is 8 AWG because NEC 2026 250.122(A) requires a grounding conductor of at least 8 AWG for a 30A disconnecting means.