1、电线电缆线径允许偏差引自标准GB/T39531983、GB/T39551983、JB8734.21998、JB16011993标称截面mm2 根数国标单线标称直径mm行标单线标称直径mm 允许偏差% 单位允许偏差范围mm0.75 1 0.97 0.873 1%d 0.0097+0.00971 1 1.13 1.017 1%d 0.0113+0.01131.5 1 1.38 1.242 1%d 0.0138+0.01382.5 1 1.78 1.602 1%d 0.0178+0.01784 1 2.25 2.025 1%d 0.0225+0.02256 1 2.76 2.484 1%d 0.02
2、76+0.027610 7 1.35 1.215 1%d 0.0135+0.013516 7 1.7 1.53 1%d 0.017+0.01725 7 2.14 1.926 1%d 0.0214+0.021435 7 2.52 2.268 1%d 0.0252+0.025250 19 1.78 1.602 1%d 0.0178+0.017870 19 2.14 1.926 1%d 0.0214+0.021495 19 2.52 2.268 1%d 0.0252+0.0252120 37 2.03 1.827 1%d 0.0203+0.0203150 37 2.25 2.025 1%d 0.02
3、25+0.0225185 37 2.52 2.268 1%d 0.0252+0.0252240 61 2.25 2.025 1%d 0.0225+0.0225300 61 2.52 2.268 1%d 0.0252+0.0252400 61 2.85 2.565 1%d 0.0285+0.0285500 91 2.65 2.385 1%d 0.0265+0.0265630 127 2.52 2.268 1%d 0.0252+0.0252电缆相线截面与保护地线截面关系：S16mm2 =S16mm2 S35mm2=16mm235mm2 S400mm2=S/2400mm2 S800mm2=200mm2S800mm2=S/4注：行标电缆线径为国标电缆线径的90
