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The following table gives metric and imperial measurements based on the STANDARD WIRE
GAUGE used to classify wire sizes. In the USA they use a slightly different chart (see
figure 2)
FIGURE 1 - STANDARD WIRE GAUGE
| STANDARD WIRE GAUGE |
MILLIMETRES |
INCHES |
| 17 |
1.4mm |
0.056" |
| 18 |
1.2mm |
0.048" |
| 19 |
1mm |
0.040" |
| 20 |
0.9mm |
0.036" |
| 21 |
0.8mm |
0.032" |
| 22 |
0.7mm |
0.028" |
| 23 |
0.6mm |
0.024" |
| 24 |
0.55mm |
0.022" |
| 25 |
0.5mm |
0.020" |
| 26 |
0.45mm |
0.018" |
| 27 |
0.4mm |
0.016" |
| 28 |
0.38mm |
0.015" |
| 29 |
0.35mm |
0.014" |
| 30 |
0.31mm |
0.012" |
| 31 |
0.29mm |
0.011" |
) 
