常用铜导线（BVR）载流量对照表序号铜电线型号单心载流量(25。C)(A)0.95VV12345671011121314151617181920211.5mm 2 /c2.5mm 2 /c4mm 2 /c6mm 2 /c10mm 2 /c16mm 2 /c25mm 2 /c35mm 2 /c50mm 2 /c70mm 2 /c95mm 2 /c120mm 2 /c150mm 2 /c185mm 2 /c240mm 2 /c300mm 2 /c400mm 2 /c500mm 2 /c630mm 2 /c800mm 2 /c1000mm 2 /c20283848659011514517022026030035041048056065075088011001300YJV253550608511015018023028535041048000740880100011001300140030.8618.911.767.8.672.951.871.351.010.710.520.430.360.30.250.220.20.190.180.170.1626.7318.911.767.8.042.551.621.170.870.610.450.370.320.260.220.20.170.160.150.150.1426.7318.911.767.8.042.561.621.170.880.620.450.380.330.280.240.210.20.180.170.170.1626.7318.911.767.8.052.551.631.190.90.650.50.420.370.330.290.280.260.250.250.240.240.850.7VV162334405570100125145190230270310360430500600YJV163538557510814017521026533041047057065070082018.911.767.8.672.91.91.310.70.520.420.350.290.240.210.19电压降品字型电紧挨一字间距一字两心mv/M压降mv/M型电压降型电压降载流电压降mv/MYJV绝缘用的是交联聚乙烯.VV绝缘用的是聚氯乙烯. YJV电缆工作温度达90度，而VV只有70度，同截面积YJV电缆载流量大。
VV类电缆导体运行最高额定温度为摄氏70度，短路时（持续时间小于5秒）最高温度不超过摄氏160度。YJV类电缆导体运行最高额定温度为摄氏90度，短路时（持续时间小于5秒）最高温度不超过摄氏250度。
YJV从长远看比VV好（使用寿命长等），但比VV贵。从技术经济指标看，三芯的YJV比VV电缆的各项参数都要高。
在民用建筑中推荐使用YJV，其载流量比VV的大，更为主要的是在电气火灾时，由于其绝缘材料不含氯，燃烧时不会产生有毒气体。
对照表
三心载流电压降四心载流电压降mv/MVV13182332456080105130165200235275320390450YJV18223440557510013016021026030035041048556030.8618.911.767.8.672.61.61.20.870.610.450.360.30.250.210.19VV131828386586108138175220255340400470500YJV13304055806530.8618.911.767.8.672.61051.61301.21650.872100.612600.453000.363600.34150.2950.215800.19
