How to Choose Proper Wire Size on Circuit Repair
Sponsored LinksThere are two factors must be considered while choosing the proper size of wire on circuit repairs: wire gauge numbers and wire length. And herein is the list of wire gauge size based on the American Wire Gauge system.
American Wire Gauge Sizes (AWG)
| Gauge Sizes | Conductor Diameter (inch) | Cross Section Area (Circular Mills) |
| 20 | .032″ | 1,020 |
| 16 | .051″ | 2,580 |
| 12 | .081″ | 6,530 |
| 8 | .128″ | 16,500 |
| 2 | .258″ | 66,400 |
| 0 | .325″ | 106,000 |
| 2/0 | .365″ | 133,000 |
Wire gauge numbers are determined by the conductor’s cross section area. In this system, gauge numbers are assigned to wires of different thicknesses. A circular mil is the area of a circle 1 mil (0.001) in diameter. The following table shows you with the AWG size equivalents in square millimeters.
| AWG Size | Metric Size (mm2) |
| 20 | 0.5 |
| 18 | 0.8 |
| 16 | 1.0 |
| 14 | 2.0 |
| 12 | 3.0 |
| 10 | 5.0 |
| 8 | 8.0 |
| 6 | 13.0 |
| 4 | 19.0 |
See here if you need a detailed conversion chart for AWG to metric system.
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