In a commercial building, a disconnecting means is required for each branch circuit. According to NEC 2026, what is the minimum number of poles required for a 100A disconnecting means?
- A1
- B2
- C3
- 4
Exam tip
Always check for the grounding pole requirement in addition to the number of poles for the circuit rating.
Why D is correct
The correct answer is 4 poles because NEC 2026 requires a 3-pole disconnecting means for 100A circuits, and an additional pole for grounding.