A single continuous-duty motor is covered by the 2026 NEC motor full-load-current tables. The applicable table value is 28 amperes, and no special motor rule or exception applies. What minimum branch-circuit conductor ampacity is required before any additional installation adjustment?
- A22.4 amperes
- B28 amperes
- C56 amperes
- 35 amperes
Where to look it up
https://www.elightinformation.com/post/motor-and-welding-machine-calculation-steps-2026-nec
Why D is correct
28 A × 125% = 35 A, D. This establishes the conductor-ampacity floor for the stated motor case. It does not select an AWG size or an overload setting; final conductor selection must also meet installation and terminal limits. Source: E Light Electric, Motor and Welding Machine Calculation Steps 2026 NEC, motor-circuit selection section: https://www.elightinformation.com/post/motor-and-welding-machine-calculation-steps-2026-nec