Electrical Requirements
| Specification |
Requirement |
| Preferred voltage |
240V (all motors start more reliably on 240V) |
| 3/4 HP motor |
Usually factory-wired 120V |
| 1 HP and 1.5 HP motors |
Factory-wired 240V |
| Rewiring |
Possible — follow motor nameplate wiring diagram |
| Wire gauge |
12 AWG minimum for all installations |
DO NOT USE EXTENSION CORDS. High starting current overheats the starting capacitor through an extension cord, destroying the motor. Not covered under warranty.
Motor Current Reference
| HP |
No-Load Current |
Full-Load Current |
Locked Rotor Current |
| 3/4 |
7.3 / 3.7 A (120/240V) |
11 / 5.5 A (120/240V) |
55 / 32 A (120/240V) |
| 1 |
9.1 / 4.5 A (120/240V) |
13.6 / 6.8 A (120/240V) |
75 / 43 A (120/240V) |
| 1.5 |
10.1 / 5.1 A (120/240V) |
15.2 / 7.6 A (120/240V) |
120 / 65 A (120/240V) |
Circuit Protection Guidelines
- Size circuit breaker at full-load amps × 1.25 (NEC requirement)
- Use a dedicated circuit — do not share with other high-draw equipment
- Ground the centrifuge frame per local electrical code
- For flammable vapor environments: EXP PROOF Class I Group D / Class II Group F&G motors required
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