Table
Single-Phase Motor Full-Load Amps
Single-Phase Motor Full-Load Amps lookup table with assumptions and boundary notes.
Scope
Motor current estimate only. Motor nameplate current, voltage, efficiency, power factor, duty, and product data govern field application.
Lookup table
Estimate single-phase motor full-load current at common Canadian utilization voltages.
Scroll sideways to keep row labels aligned with hidden columns.
| Motor hp | Voltage | Estimated FLA (A) | Assumption | Boundary |
|---|---|---|---|---|
| 0.25 | 120 | 4 | 60% efficiency, 0.65 PF | formula estimate only; motor nameplate FLA and manufacturer data govern field application |
| 0.5 | 120 | 7 | 65% efficiency, 0.68 PF | formula estimate only; motor nameplate FLA and manufacturer data govern field application |
| 0.75 | 120 | 9.8 | 68% efficiency, 0.7 PF | formula estimate only; motor nameplate FLA and manufacturer data govern field application |
| 1 | 120 | 12 | 72% efficiency, 0.72 PF | formula estimate only; motor nameplate FLA and manufacturer data govern field application |
| 1 | 240 | 6 | 72% efficiency, 0.72 PF | formula estimate only; motor nameplate FLA and manufacturer data govern field application |
| 1.5 | 240 | 8.3 | 75% efficiency, 0.75 PF | formula estimate only; motor nameplate FLA and manufacturer data govern field application |
| 2 | 240 | 10.2 | 78% efficiency, 0.78 PF | formula estimate only; motor nameplate FLA and manufacturer data govern field application |
| 3 | 240 | 14.6 | 80% efficiency, 0.8 PF | formula estimate only; motor nameplate FLA and manufacturer data govern field application |
| 5 | 240 | 22.6 | 84% efficiency, 0.82 PF | formula estimate only; motor nameplate FLA and manufacturer data govern field application |
Notes
- Check table values for preliminary lookup and arithmetic checks only.
- Confirm equipment ratings, product markings, installation conditions, utility requirements, and the local authority requirements before design or field use.