Convert Electrical Horsepower to Boiler Horsepower
Convert Electrical Horsepower (hp(E)) to Boiler Horsepower (BHP) instantly and accurately.
Conversion Formula
BHP = hp(E) × 0.07604055738
About Electrical Horsepower
The electrical horsepower (hp(E)) is defined as exactly 746 W - the US NEMA rounding used on electric motor nameplates. It differs from mechanical hp (745.7 W) by only 0.04%. Every NEMA-rated motor in the US carries a horsepower nameplate: a '5 hp motor' delivers 5 × 746 = 3,730 W. NEC motor branch-circuit sizing tables, overload relay selection, and starter ratings are all based on hp(E). Despite global kW adoption, US industrial motor infrastructure remains standardised in electrical horsepower. 1 hp(E) = 746 W.
About Boiler Horsepower
One boiler horsepower (BHP) ≈ 9,810 W = 33,475 BTU/h - the power to evaporate 34.5 lb of water per hour at 212°F, standardised by ASME for rating steam boilers. A small office building needs 10-50 BHP; a hospital or large plant 200-2,000 BHP. Critically, 1 BHP is ~13.1× larger than 1 mechanical horsepower (746 W) - a dangerous confusion when specifying heating equipment. 1 BHP ≈ 9,810.6 W.
Quick Reference Table
| Electrical Horsepower (hp(E)) | Boiler Horsepower (BHP) |
|---|---|
| 1 hp(E) | 0.0760406 BHP |
| 2 hp(E) | 0.152081 BHP |
| 5 hp(E) | 0.380203 BHP |
| 10 hp(E) | 0.760406 BHP |
| 25 hp(E) | 1.90101 BHP |
| 50 hp(E) | 3.80203 BHP |
| 100 hp(E) | 7.60406 BHP |