Convert Ergs per Second to Electrical Horsepower
Convert Ergs per Second (erg/s) to Electrical Horsepower (hp(E)) instantly and accurately.
Conversion Formula
hp(E) = erg/s × 1.340482574e-10
About Ergs per Second
An erg per second (erg/s) is the CGS unit of power - exactly 10⁻⁷ W. Despite SI adoption, erg/s persists in astrophysics: the Sun's total luminosity is 3.828 × 10³³ erg/s; a peak supernova radiates ~10⁴³ erg/s - more power than the Sun emits over its 10-billion-year lifetime. X-ray binaries, active galactic nuclei, and neutron star accretion rates are catalogued in erg/s across decades of archival literature. 1 erg/s = 10⁻⁷ W.
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.
Quick Reference Table
| Ergs per Second (erg/s) | Electrical Horsepower (hp(E)) |
|---|---|
| 1 erg/s | 1.34 × 10-10 hp(E) |
| 2 erg/s | 2.681 × 10-10 hp(E) |
| 5 erg/s | 6.702 × 10-10 hp(E) |
| 10 erg/s | 1.34 × 10-9 hp(E) |
| 25 erg/s | 3.351 × 10-9 hp(E) |
| 50 erg/s | 6.702 × 10-9 hp(E) |
| 100 erg/s | 1.34 × 10-8 hp(E) |