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All wiring and electrical connections should comply with the National Electrical Code (NEC) and with local codes and practices.
| Wire Gage (AWG) | |||||||
| Transformer | Distance - Motor to Transformer (Feet) | ||||||
| HP | Volts | kVA | 100 | 150 | 200 | 300 | 500 |
| 1.5 | 230 | 3 | 12 | 12 | 12 | 12 | 10 |
| 2 | 460 | 3 | 12 | 12 | 12 | 12 | 12 |
| 3 | 230 | 3 | 12 | 12 | 12 | 10 | 8 |
| 2 | 460 | 3 | 12 | 12 | 12 | 12 | 12 |
| 3 | 230 | 5 | 12 | 10 | 10 | 8 | 6 |
| 3 | 460 | 5 | 12 | 12 | 12 | 12 | 10 |
| 5 | 230 | 7.5 | 10 | 8 | 8 | 6 | 4 |
| 5 | 460 | 7.5 | 12 | 12 | 12 | 10 | 8 |
| 7.5 | 230 | 10 | 8 | 6 | 6 | 4 | 2 |
| 7.5 | 460 | 10 | 12 | 12 | 12 | 10 | 8 |
| 10 | 230 | 15 | 6 | 4 | 4 | 4 | 1 |
| 10 | 460 | 15 | 12 | 12 | 12 | 10 | 8 |
| 15 | 230 | 20 | 4 | 4 | 4 | 2 | 0 |
| 15 | 460 | 20 | 12 | 10 | 10 | 8 | 6 |
| 20 | 230 | 1) | 4 | 2 | 2 | 1 | 0 |
| 20 | 460 | 1) | 10 | 8 | 8 | 6 | 4 |
| 25 | 230 | 1) | 2 | 2 | 2 | 0 | 0 |
| 30 | 230 | 1) | 2 | 1 | 1 | 0 | 0 |
| 30 | 460 | 1) | 8 | 6 | 6 | 4 | 2 |
| 40 | 230 | 1) | 1 | 0 | 0 | 0 | 0 |
| 50 | 230 | 1) | 1 | 0 | 0 | 0 | 0 |
| 50 | 460 | 1) | 4 | 4 | 2 | 2 | 0 |
| 30 | 230 | 1) | 1 | 0 | 0 | 0 | 0 |
| 60 | 460 | 1) | 4 | 2 | 2 | 0 | 0 |
| 75 | 230 | 1) | 0 | 0 | 0 | 0 | 0 |
| 75 | 460 | 1) | 4 | 2 | 2 | 0 | 0 |
1) The local power company should be consulted
If undersized wire is used between the motor and the power source, the starting and load carrying cap abilities of the motor will be limited.
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