标称截面mm2,等效实心直径mm,Class1/2铜电阻_20C_Ohm_per_km,Class5软铜电阻_20C_Ohm_per_km,约等AWG,常见用途 0.5,0.798,36.0,39.0,20,信号线、弱电控制线、屏蔽引线 0.75,0.977,24.5,26.0,18,控制线、灯线、二次回路 1.0,1.128,18.1,19.5,17,控制回路、仪器仪表引线 1.5,1.382,12.1,13.3,15,环路线圈本体、照明支路 2.5,1.784,7.41,7.98,13,环路线圈本体、插座回路、道闸电源 4,2.257,4.61,4.95,11,道闸/电机主回路、空调回路 6,2.764,3.08,3.3,9,道闸电机、小功率设备进线 10,3.568,1.83,1.91,7,设备电源进线、充电桩支路 16,4.514,1.15,1.21,5,配电支路、充电桩回路 25,5.642,0.727,0.78,3,配电干路、进线 35,6.676,0.524,0.554,2,总进线、充电桩干线 50,7.979,0.387,0.386,1/0,总进线、母排连接 70,9.441,0.268,0.272,2/0,大功率进线 95,10.998,0.193,0.206,3/0,低压出线、大功率回路 120,12.361,0.153,0.161,4/0,低压主进线 150,13.820,0.124,0.129,—,低压主进线 185,15.348,0.0991,0.106,—,低压主进线 240,17.481,0.0754,0.0801,—,低压主进线、密集型母线 300,19.544,0.0601,0.0641,—,低压主进线、母线槽 400,22.568,0.047,0.0486,—,大截面电缆、母线 500,25.231,0.0366,0.0384,—,大截面电缆、母线 630,28.322,0.0287,0.0287,—,大截面电缆、母线