Motor Wiring Data - 480 Volt
Motor wiring data - NEMA Amps, Starter size, HMCP Size .. - motors ranging 1/2 - 500 HP
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480 Volt motor wiring data - NEMA Amps, starter size, HMCP size overload phase wires, GND and conduit size are indicated below:
| Motor HP | NEMA Amps | Starter Size | Overload |
Motor Circuit Protector Size HMCP |
Conduit Size | Phase Wires | GND |
| 1/2 | 1.0 | 1 | W30 | 3 | 3/4 | 12 | 12 |
| 3/4 | 1.4 | 1 | W33 | 3 | 3/4 | 12 | 12 |
| 1 | 1.8 | 1 | W36 | 3 | 3/4 | 12 | 12 |
| 1 1/2 | 2.6 | 1 | W40 | 7 | 3/4 | 12 | 12 |
| 2 | 3.4 | 1 | W42 | 7 | 3/4 | 12 | 12 |
| 3 | 4.8 | 1 | W45 | 7 | 3/4 | 12 | 12 |
| 5 | 7.5 | 1 | W50 | 15 | 3/4 | 12 | 12 |
| 7 1/2 | 11 | 1 | W54 | 15 | 3/4 | 12 | 12 |
| 10 | 14 | 1 | W56 | 30 | 3/4 | 10 | 10 |
| 15 | 21 | 2 | W61 | 50 | 3/4 | 10 | 10 |
| 20 | 27 | 2 | W64 | 50 | 1 | 8 | 8 |
| 25 | 34 | 2 | W67 | 70 | 1 1/4 | 6 | 6 |
| 30 | 40 | 3 | W67 | 100 | 1 1/4 | 6 | 6 |
| 40 | 52 | 3 | W69 | 100 | 1 1/4 | 4 | 4 |
| 50 | 65 | 3 | W72 | 100 | 1 1/4 | 4 | 4 |
| 60 | 77 | 4 | W74 | 150 | 1 1/2 | 2 | 2 |
| 75 | 96 | 4 | W77 | 150 | 1 1/2 | 2 | 2 |
| 100 | 125 | 4 | W36 | 200 | 2 | 2/0 | 2 |
| 125 | 156 | 5 | W38 | 250 | 2 1/2 | 4/0 | 1/0 |
| 150 | 180 | 5 | W40 | 400 | 2 1/2 | 4 /0 | 1/0 |
| 200 | 240 | 5 | W43 | 400 | 3 | 350 | 2/0 |
| 250 | 300 | 6 | W38 | 400 | 4 | 2 - 250 | 2/0 |
| 300 | 360 | 6 | W40 | 500 | 4 | 2 - 250 | 2/0 |
| 350 | 420 | 6 | W41 | 600 | 4 | 2 - 300 | 2/0 |
| 400 | 480 | 6 | W43 | 600 | 4 | 2 - 350 | 2/0 |
| 500 | 600 | 7 | 750 | 5 | 3 - 350 | 2/0 |
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