（单根铜线OD）平方*0.7854*导体根数。 就是导体面积 常用 *AWG转换*平方 的线材换算简单对照表*AWG转换*平方的线材换算表格公式=3.14*（单根直径/2）*（单根直径/2）*总根数尺寸AWG截面积 mm2 1AWG 42.41 2AWG 33.63 3AWG 26.65 4AWG 21.15 5AWG 16.77 6AWG 13.3 7AWG 10.55 8AWG 8.368 9AWG 6.632 10AWG 5.262 11AWG 4.172 12AWG 3.309 13AWG 2.624 14AWG 2.081 15AWG 1.65 16AWG 1.309 17AWG 1.037 18AWG 0.8226 19AWG 0.6529 20AWG 0 .5174 21AWG 0.4105 22AWG 0.3256 23AWG 0.2581 24AWG 0.2047 25AWG 0.1623 26AWG 0.1288 27AWG 0.1021 28AWG 0.08097 29AWG 0.06524 30AWG 0.05097 31AWG 0.04039 32AWG 0.03203 33AWG 0.0254 34AWG 0.02014 35AWG 0.01597 36AWG 0.01267 37AWG 0.01005 38AWG 0.007968 39AWG 0.006319 40AWG 0.005012 常用的是偶数线规，像16AWG 18AWG 20AWG 24AWG 28AWG *AWG转换*平方的线材换算表格公式=3.14*（单根直径/2）*（单根直径/2）*总根数尺寸AWG截面积 mm2 1AWG 42.41 2AWG 33.63 3AWG 26.65 4AWG 21.15 5AWG 16.77 6AWG 13.3 7AWG 10.55 8AWG 8.368 9AWG 6.632 10AWG 5.262 11AWG 4.172 12AWG 3.309 13AWG 2.624 14AWG 2.081 15AWG 1.65 16AWG 1.309 17AWG 1.037 18AWG 0.8226 19AWG 0.6529 20AWG 0 .5174 21AWG 0.4105 22AWG 0.3256 23AWG 0.2581 24AWG 0.2047 25AWG 0.1623 26AWG 0.1288 27AWG 0.1021 28AWG 0.08097 29AWG 0.06524 30AWG 0.05097 31AWG 0.04039 32AWG 0.03203 33AWG 0.0254 34AWG 0.02014 35AWG 0.01597 36AWG 0.01267 37AWG 0.01005 38AWG 0.007968 39AWG 0.006319 40AWG 0.005012 常用的是偶数线规，像16AWG 18AWG 20AWG 24AWG 28AWG