2 hp motor: how many amps?
Full-load current from NEC Article 430 tables.
12 A
2 hp motor full-load current at 230 V single-phase · 1.49 kW output
Full-load current by voltage
| Supply | Full-load amps | Conductor ampacity (125%) |
|---|---|---|
| 115 V single-phase | 24 A | 30.0 A |
| 230 V single-phase | 12 A | 15.0 A |
| 208 V three-phase | 7.5 A | 9.4 A |
| 230 V three-phase | 6.8 A | 8.5 A |
| 460 V three-phase | 3.4 A | 4.2 A |
NEC 430.248/430.250 table values for typical induction motors; use these (not the nameplate) to size conductors and short-circuit protection, and the nameplate for overload protection.
FAQ
How many amps does a 2 hp motor draw?
Per NEC tables, 24 A A at 115 V single-phase; 12 A A at 230 V single-phase; 7.5 A A at 208 V three-phase; 6.8 A A at 230 V three-phase; 3.4 A A at 460 V three-phase.
How many watts is 2 hp?
2 hp = 1492 W of mechanical output. Electrical input is higher because of motor efficiency and power factor.