Sample data from Engineering Database — 375 reference tables, deterministic calculators, and Engineering AI. Sign up free
Motor Efficiency: SINGLE PHASE
Motor efficiency and power factor � NEMA MG 1 efficiency and power factor data at full, 75%, and 50% load for standard and premium efficiency motors by horsepower
| motor class | hp numeric | efficiency 50 pct (%) | efficiency 75 pct (%) | efficiency fl pct (%) | hp rating | kw rating (kW) | pf 50 (dimensionless) | pf 75 (dimensionless) | pf fl (dimensionless) | poles | speed rpm (rpm) | standard |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SINGLE PHASE | 10 | 74 | 80 | 82 | 10 | 7.46 | 0.68 | 0.78 | 0.84 | 4 | 1,730 | NEMA MG-1 guidelines; Chapman Electric Machinery Fundamentals 8th Ed; DOE/ACEEE-IE952 |
What else is in Engineering Database
Iron Engine ↗Engineering AI at ironengine.ai
AI built for engineering. Searches the engineering database, performs calculations, gives source-backed engineering insights.
Get started for free ↗Reference Data375 engineering tablesMaterial properties, pipe and shape dimensions, code tables, and electrical ratings across mechanical, civil, chemical, electrical, materials, and manufacturing engineering.
Browse dataCalculatorsDeterministic engineering calculatorsSizing, checking, and conversion tools that run against the reference tables. Inputs are code-compliant, outputs are traceable to the source standard.
Browse calculators