Convert Electrical Horsepower to Petawatts
Convert Electrical Horsepower (hp(E)) to Petawatts (PW) instantly and accurately.
Conversion Formula
PW = hp(E) × 7.460000000e-13
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 Petawatts
A petawatt (PW) is 10¹⁵ W. Total solar power intercepted by Earth is ~174 PW. The world's most powerful laser pulses operate at petawatt peak power via chirped pulse amplification (CPA, 2018 Nobel Prize in Physics): China's SULF demonstrated 10 PW in 2019; ELI-NP targets 10 PW. These PW pulses last femtoseconds and create plasma temperatures of billions of kelvin in laboratory targets. Gamma-ray bursts radiate 10²⁴-10²⁷ W at peak - thousands to billions of times the petawatt scale. 1 PW = 10¹⁵ W.
Quick Reference Table
| Electrical Horsepower (hp(E)) | Petawatts (PW) |
|---|---|
| 1 hp(E) | 7.46 × 10-13 PW |
| 2 hp(E) | 1.492 × 10-12 PW |
| 5 hp(E) | 3.73 × 10-12 PW |
| 10 hp(E) | 7.46 × 10-12 PW |
| 25 hp(E) | 1.865 × 10-11 PW |
| 50 hp(E) | 3.73 × 10-11 PW |
| 100 hp(E) | 7.46 × 10-11 PW |