The following conductor diameters are typical values as a function of the conductor cross-section.

The user can choose an arbitrary value not limited to the values in the choices below, but a warning is indicated if the conductor diameter seem unreasonably small.

For sector-shaped multi-core cables, the conductor diameter is defined as the diameter of the circle circumscribing the sector-shaped conductors. Based on that value, an equivalent diameter of the conductor $d_x$ is calculated.

Symbol
$d_{\mathrm{c}}$
Unit
mm
Related
$A_{\mathrm{c}}$
Used in
$A_{\mathrm{c}}$
$A_{\mathrm{i}}$
$D_{\mathrm{1}}$
$D_{\mathrm{c}}$
$d_{\mathrm{ci}}$
$D_{\mathrm{i}}$
$G_{\mathrm{1}}$
$k_{\mathrm{s}}$
$\lambda_{\mathrm{1es}}$
$\lambda_{\mathrm{2}}$
$r_{\mathrm{c}}$
$X_{\mathrm{0}}$
$X_{\mathrm{G}}$
$X_{\mathrm{K}}$
$Y_{\mathrm{K}}$
Choices
IEC sizesmin.nom.Diameter [mm]
max.
AWG sizesmin.nom.max.
0.5 mm²0.918 AWG1.01.021.03
0.75 mm²1.016 AWG1.261.291.3
1.0 mm²1.214 AWG1.61.631.64
1.5 mm²1.512 AWG2.012.052.07
2.5 mm²1.910 AWG2.822.872.9
4 mm²2.48 AWG3.533.613.63
6 mm²2.62.72.86 AWG4.424.524.57
10 mm²3.43.53.74 AWG5.615.725.77
16 mm²4.74.85.02 AWG7.047.197.26
25 mm²5.66.16.51 AWG8.038.188.26
35 mm²6.67.07.41/0 AWG9.029.199.3
50 mm²7.78.18.62/0 AWG10.0810.310.39
70 mm²9.39.610.03/0 AWG11.3511.611.71
95 mm²11.012.013.44/0 AWG12.7513.013.13
120 mm²12.313.015.0250 kcmil13.8914.214.33
150 mm²13.714.416.2300 kcmil15.2115.515.67
185 mm²15.315.816.4350 kcmil16.4616.816.97
240 mm²17.618.218.9400 kcmil17.5817.918.11
300 mm²19.720.021.1500 kcmil19.6320.020.24
400 mm²22.323.024.6600 kcmil21.5622.022.23
500 mm²25.326.026.8750 kcmil24.124.624.84
630 mm²28.730.532.51000 kcmil27.8128.428.65
800 mm²33.033.834.31250 kcmil31.1231.832.05
1000 mm²37.041.042.21500 kcmil34.1134.835.15
1200 mm²44.31750 kcmil36.8337.637.97
1400 mm²47.52000 kcmil39.440.240.61
1600 mm²50.02500 kcmil46.3
1800 mm²52.83000 kcmil50.7
2000 mm²55.54000 kcmil58.6
2500 mm²63.05000 kcmil65.6