Resources, Tools and Basic Information for Engineering and Design of Technical Applications!
mobile - visible on handheld devices - alternatively go to www.engineeringtoolbox.com!
Engineering ToolBox > Circuit Wiring - Three Phase (230 & 460V) Electrical Motors
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.