Table
VFD Sizing: Current vs HP at 575/600V
VFD Sizing: Current vs HP at 575/600V lookup table with assumptions and boundary notes.
Scope
Drive-current estimate only. It does not select a drive, overload setting, bypass, conductor, breaker, fuse, or motor compatibility.
Lookup table
Estimate VFD planning current from horsepower using a conservative 575/600V class sizing factor.
Scroll sideways to keep row labels aligned with hidden columns.
| Drive hp | Estimated current (A) | Typical drive class | Boundary |
|---|---|---|---|
| 1 | 1.3 | fractional to small drive | planning current only; manufacturer VFD nameplate and motor application govern sizing |
| 2 | 2.5 | fractional to small drive | planning current only; manufacturer VFD nameplate and motor application govern sizing |
| 3 | 3.8 | fractional to small drive | planning current only; manufacturer VFD nameplate and motor application govern sizing |
| 5 | 6.4 | fractional to small drive | planning current only; manufacturer VFD nameplate and motor application govern sizing |
| 7.5 | 9.5 | general-purpose drive | planning current only; manufacturer VFD nameplate and motor application govern sizing |
| 10 | 12.7 | general-purpose drive | planning current only; manufacturer VFD nameplate and motor application govern sizing |
| 15 | 19.1 | general-purpose drive | planning current only; manufacturer VFD nameplate and motor application govern sizing |
| 20 | 25.4 | general-purpose drive | planning current only; manufacturer VFD nameplate and motor application govern sizing |
| 25 | 31.8 | general-purpose drive | planning current only; manufacturer VFD nameplate and motor application govern sizing |
| 30 | 38.1 | general-purpose drive | planning current only; manufacturer VFD nameplate and motor application govern sizing |
| 40 | 50.8 | larger enclosed or panel drive | planning current only; manufacturer VFD nameplate and motor application govern sizing |
| 50 | 63.5 | larger enclosed or panel drive | planning current only; manufacturer VFD nameplate and motor application govern sizing |
| 75 | 95.3 | larger enclosed or panel drive | planning current only; manufacturer VFD nameplate and motor application govern sizing |
| 100 | 127 | larger enclosed or panel drive | planning current only; manufacturer VFD nameplate and motor application govern sizing |
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.