| Total System Amperage Draw |
Up To 4 ft. |
Up To 7 ft. |
Up To 10 ft. |
Up To 13 ft. |
Up To 16 ft. |
Up To 19 ft. |
Up To 22 ft. |
Up To 28 ft. |
| 0-20A |
14 ga. |
12 ga. |
12 ga. |
10 ga. |
10 ga. |
8 ga. |
8 ga. |
8 ga. |
| 20-35A |
12 ga. |
10 ga. |
8 ga. |
8 ga. |
6 ga. |
6 ga. |
6 ga. |
4 ga. |
| 35-50A |
10 ga. |
8 ga. |
8 ga. |
6 ga. |
4 ga. |
4 ga. |
4 ga. |
4 ga. |
| 50-65A |
8 ga. |
8 ga. |
6 ga. |
4 ga. |
4 ga. |
4 ga. |
4 ga. |
2 ga. |
| 65-85A |
6 ga. |
6 ga. |
4 ga. |
4 ga. |
2 ga. |
2 ga. |
2 ga. |
0 ga. |
| 85-105A |
6 ga. |
6 ga. |
4 ga. |
2 ga. |
2 ga. |
2 ga. |
2 ga. |
0 ga. |
| 105-125A |
4 ga. |
4 ga. |
4 ga. |
2 ga. |
0 ga. |
0 ga. |
0 ga. |
0 ga. |
| 125-150A |
2 ga. |
2 ga. |
2 ga. |
0 ga. |
0 ga. |
0 ga. |
0 ga. |
00 ga. |
The above chart shows wire gauges to be used, if no less than .5 volt drop is accepted. If aluminum wire or tinned wire is used, the gauges should be of an even larger size to compensate.
Cable gauge size calculation takes into account terminal resistance.
Wire gauge recommendations based on IASCA guidlines
|
