Old Library
The information here is no longer maintained.Please go to our NEW LIBRARY where we have imported this page and added more.
This table came from:
http://www.the12volt.com/info/recwirsz.asp
Recommended Power and Ground Cable Sizes
| To calculate the proper power and ground cable sizes, find the distance of the power cable
along the top row. If your measurement is between two measurements, use the higher one.
Next, find the total power the cable must support on the left. If your measurement is between
two measurements, use the higher one. The size listed where your two measurements meet is the recommended
cable size. |
| Recommended Cable Size by Power and Distance | |||||
| Total RMS Power (watts) |
Distance | ||||
| 4 feet | 8 feet | 12 feet | 16 feet | 20 feet | |
| 100 | 10 gauge | 10 gauge | 8 gauge | 8 gauge | 4 gauge |
| 200 | 10 gauge | 8 gauge | 8 gauge | 4 gauge | 4 gauge |
| 400 | 8 gauge | 8 gauge | 4 gauge | 4 gauge | 4 gauge |
| 600 | 8 gauge | 4 gauge | 4 gauge | 4 gauge | 4 gauge |
| 800 | 4 gauge | 4 gauge | 4 gauge | 2 gauge | 2 gauge |
| 1000 | 4 gauge | 4 gauge | 2 gauge | 2 gauge | 2 gauge |
| 1400 | 4 gauge | 2 gauge | 2 gauge | 2 gauge | 2 gauge |
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| * Note: These figures have been rounded off for easy reference. Ground cables should be the same size (or larger) as the power cable. | ||||||||||||||||||||||||||||||||||||||||||