Comparison table of AWG and square area




     AWG (American wire gauge) American wire gauge is a standard to distinguish the diameter of the wire, also known as Brown & Sharpe wire gauge. This standardized wire gauge system has been in use in the United States since 1857. The value in front of AWG (such as 24AWG, 26AWG) indicates the number of holes that the wire must pass before forming the final diameter. The larger the value, the higher the level of the wire passing through the hole, and the smaller the diameter of the wire. Thick wires have better physical strength and lower resistance, but the thicker the wires, the more copper is needed to make the cable, which will make the cable heavier, more difficult to install, and more expensive. The challenge in cable design is to use the smallest diameter wire possible (reducing cost and installation complexity) while ensuring the maximum capacity of the wire is achieved at the necessary voltage and frequency.

     Below is the comparison table of AWG and square area
    
 
AWG and mm² comparison table
AWG  Outer Diameter  area
mm²
Resistance
ohm/KM
  AWG Outer Diameter area
mm²
Resistance
ohm/KM
mm inch mm inch
4/0 11.68 0.46 107.22 0.17    22 0.643 0.0253 0.3247 54.3
3/0 10.40 0.4096 85.01 0.21   23 0.574 0.0226 0.2588 48.5
2/0 9.27 0.3648 67.43 0.26   24 0.511 0.0201 0.2047 89.4
1/0 8.25 0.3249 53.49 0.33   25 0.44 0.0179 0.1624 79.6
1 7.35 0.2893 42.41 0.42   26 0.404 0.0159 0.1281 143
2 6.54 0.2576 33.62 0.53   27 0.361 0.0142 0.1021 128
3 5.83 0.2294 26.67 0.66   28 0.32 0.0126 0.0804 227
4 5.19 0.2043 21.15 0.84   29 0.287 0.0113 0.0647 289
5 4.62 0.1819 16.77 1.06   30 0.254 0.0100 0.0507 361
6 4.11 0.1620 13.30 1.33   31 0.226 0.0089 0.0401 321
7 3.67 0.1443 10.55 1.68   32 0.203 0.0080 0.0316 583
8 3.26 0.1285 8.37 2.11   33 0.18 0.0071 0.0255 944
9 2.91 0.1144 6.63 2.67   34 0.16 0.0063 0.0201 956
10 2.59 0.1019 5.26 3.36   35 0.142 0.0056 0.0169 1200
11 2.30 0.0907 4.17 4.24   36 0.127 0.0050 0.0127 1530
12 2.05 0.0808 3.332 5.31   37 0.114 0.0045 0.0098 1377
13 1.82 0.0720 2.627 6.69   38 0.102 0.0040 0.0081 2400
14 1.63 0.0641 2.075 8.45   39 0.089 0.0035 0.0062 2100
15 1.45 0.0571 1.646 10.6   40 0.079 0.0031 0.0049 4080
16 1.29 0.0508 1.318 13.5   41 0.071 0.0028 0.0040 3685
17 1.15 0.0453 1.026 16.3   42 0.064 0.0025 0.0032 6300
18 1.02 0.0403 0.8107 21.4   43 0.056 0.0022 0.0025 5544
19 0.912 0.0359 0.5667 26.9   44 0.051 0.0020 0.0020 9180
20 0.813 0.0320 0.5189 33.9   45 0.046 0.0018 0.0016 10200
21 0.724 0.0285 0.4116 42.7   46 0.041 0.0016 0.0013 16300

 
 
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