电缆 20℃最大电阻Ω/Km截面单芯和多芯用第 1 种实芯导体单芯和多芯用第 2 种实芯导体单芯和多芯用第 5 种实芯导体0.50.7511. 52. 54610162535507095120150185240300400500630铜（不镀金属）36.024.518.112.17.414.613.081.831.150.7270.5240.3870.2680.1930.1530.1240.09910.07540.06010.04700.03660.0283铜（镀金属）36.724.818.212.27.564.703.111.841.160.7340.5290.3910.2700.1950.1540.1260.1000.07620.06070.04750.03690.0286铝///18.1012.107.414.613.081.911.200.8680.6410.4430.3200.2530.2060.1640.1250.100铜（不镀金属）36.024.518.112.17.414.613.081.831.150.7270.5240.3870.2680.1930.1530.1240.09910.07540.06010.04700.03660.0283铜（镀金属）36.724.818.212.27.564.703.111.841.160.7340.5290.3910.2700.1950.1540.1260.1000.07620.06070.04750.03690.0286铝/////7.414.613.081.911.200.8680.6410.4430.3200.2530.2060.1640.1250.1000.07780.06050.0469铜（不镀金属）39.026.019.513.37.984.953.301.911.210.780.5540.3860.2720.2060.1610.1290.1060.08010.06410.04950.03910.0287铜（镀金属）40.126.720.013.78.215.093.391.951.240.7950.5650.3930.2770.2100.1640.1320.1080.08170.06540.04950.03910.029280010000.02210.01760.02240.01770.02210.01760.02240.01770.03690.0291。