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1、常见的导线规格有1.152.5、4、6、10、16、25、35、50、70、95、120、150、185、240平方毫米。不常用的有：0.5、0.75、300、400、500平方毫米等。2.5平的铜线=4平的铝线。54=20A再加上穿管200.8=16A的电也就是说选2.5平的铜线或4平的铝线，它们再穿管的境况下可带的16A的电流。用5000w的电器该用几平方电线国标gb4706.1-19921998规定的电线负载电流值(部分)。铜芯电线:铜芯线截面积允许长期电流。2.5平方毫米(16A25A)4平方毫米(25A32A)6平方毫米(32A40A)o铝芯电线:铝芯线截面积允许长期电流。2.5平方
2、毫米(13A20A)4平方毫米(20A25A)6平方毫米(25A32A)o估算口诀：二点五下乘以九，往上减一顺号走。三十五乘三点五，双双成组减点五。条件有变加折算，高温九折铜升级。穿管根数二三四，八七六折满载流。说明：本节口诀对各种绝缘线(橡皮和塑料绝缘线)的载流量(安全电流)不是直接指出，而是截面乘上一定的倍数来表示，通过心算而得。由表53可以看出：倍数随截面的增大而减小。二点五下乘以九，往上减一顺号走说的是25mm及以下的各种截面铝芯绝缘线，其载流量约为截面数的9倍。如2.5m11导线，载流量为2.59=22.5（八）。从4mm,及以上导线的载流量和截面数的倍数关系是顺着线号往上排，倍数逐
3、次减I,即4x8、6x7、106s16x5、254o三十五乘三点五，双双成组减点五，说的是35mm”的导线载流量为截面数的3.5倍，即353,5=122.5（八）。从50mm及以上的导线，其载流量与截面数之间的倍数关系变为两个两个线号成一组，倍数依次减O.5o即50、70mm,导线的载流量为截面数的3倍；95、12Omm导线载流量是其截面积数的2.5倍，依次类推。条件有变加折算，高温九折铜升级。上述口诀是铝芯绝缘线、明敷在环境温度25。C的条件下而定的。若铝芯绝缘线明敷在环境温度长期高于25。C的地区，导线载流量可按上述口诀计算方法算出，然后再打九折即可；当使用的不是铝线而是铜芯绝缘线，它的载
4、流量要比同规格铝线略大一些，可按上述口诀方法算出比铝线加大一个线号的载流量。如16mm铜线的载流量，可按25mm2铝线计算。穿管根数二三四，八七六折满载流穿管敷设两根、三根、四根电线的情况下，其载流量分别是电工口决计算载流量(单根敷设)的80%、70%、60%o电线电缆载流量的参考表(1)0.6/1KV聚氯乙烯绝缘电力电缆载流量常用型号VV22、V1.V22聚氯乙烯绝缘钢带铠装聚氯乙烯护套电力电缆载流量。1.线芯长期工作温度：70;2.环境温度：25;3.埋地深度：1000mm;4.土壤热阻系数：1.0m./W;5.线芯轴间距离：S=2D(2)YJVxYJVsYJ1.V电缆13芯额定电压0.6
5、lkv-1.83kv电缆载流量表。标称BM3非铠装铠装在空气中在地下在空气中在地下一芯二芯三芯三三芯二芯一芯二芯铜锅I姬银三I铜澈T1.5312622443528-一-2.5413630594538-4584640786050-4640-574867260509674636051-71601010285721341028710585721299883161361149717713411414211698168130Ill2518315013123017013718315613022516013135224150156279210168224183156271189162502851831973
6、392572042852301973322312047033923024439731225035327724539228124995421278298472358296428307298464355293120489305346532410335495355345524400355150570350401607454384569408400608438382185664416461678512431651471457662502427240745474549760499768-542764-494300902-611896577896-610882-569400995-678990-64299
7、1-670987-6385001135一1089-1130-1022注：表中计算值为铜芯载流量。铝芯载流量为铜芯的1/1.29倍31、32、41、4芯、5芯YJVsYJY、Y儿V、Y儿Y(包括钢带铠装)0.6lkv-1.83kv电缆载流量：标称截面mnP3+1或4芯3+2或4+1或定非铠装铠装非铠装铠装在空气中在地事I在空气气在地下在空气中在地下在空气中在地下I铝*铝铝铝2.52226-202642835283427346364636463242105160516046551668786979607025911049310482963511412911713110812250142158147
8、1601281447017418918019015917495215226222231200211120250261257262234245150292298295295274280185337338340334315321注表中给出计算值是铝芯载流量铜芯栽流量为铝芯的1.29倍YJV、YMYJV22额定电压在6/6、6/1OkV电缆载流量电压等级标称截面mm26/6、610kv电压等级6/6、6/1OkV：三B.标称截面mm2在土墟中在空气中在土壤中在空气中25161142240538550351881753006006475022120740068178570287260500770857
9、95331320630862970120367360800957110315040041210001040_1237T-YJV.YJYxYJV22电压等级8.7/10、8.715kv电缆载流量表:(3)常见BV线、BVVB型、B1.VVB型、RVVB型电线载流量通用橡套软电缆的载流量(450V/750V及以下橡胶绝缘电力电缆YQ、YQW.YHQ、YCsYCWxYHC型号的载流阻燃电线电缆载流量1)B、R系列阻燃电线电缆的载流量型号截面积mm平方导体种类豢考外径mm20。时最大单位长度直流电阻(欧km)70。时最小单位长度绝缘电阻“欧km)25。C空气敷设载流量A成品参考质里;(kgkm)BvV
10、B型铜芯2x0.7514.6x7.024.50.01213422x1.014.8x7.418.10.01116492x1.515.4x8.412.10.01120652x2.516.2x987.410.01027972x4.016.8x11.04.610.0085381302x4.027.2x11.54.610.0080381402x6.017.4x12.03.080.0070501792x6.028.0x13.03.080.0065501922x109.6x16.01.830.0065693063x0.75146x9.424.50.0129.5603x1.014.8x9.S18.10.011
11、11703x1.515.4x11.512.10.01113953x2.516.2x13.57.410.0010211423x4.017.0x15.04.610.0085271983x4.027.4x16.24.610.0080272133x6.017.4x17.03.080.0070342653x6.028.0x183.080.0065342843x109.6x22.51.830.006555457B1.VVB型铝芯2x2.5162x9.811.80.01021662x4.016.8x11.07390.008527822x6.017.4x12.04.910.0070351052x1029.6x
12、16.03.080.0065541793x2.516.2x13.5U.S0.001017952x4.017.0x157.390.008523嵋经吃3x6.017.4x174.910.007027一,177Vansn11V49型号及电压等级标称截面面积/mm平方最大外径/mmDCo三大单位长度直流电阻/（欧km）70最小单位长度绝缘电阻/（欧k11）载流量推荐值（环境温度25）成品参考coCn质里/（kgkm）ZR-BV300500V0.52.436.00.015138.30.752.624.50.0121710.90.752.824.50.0141711.81.02.818.10.Oll201
13、3.71.03.018.10.0132014.8ZR-BV450750V1.53.312.10.0112520.01.53.512.10.0102521.32.53.97.410.0103431.52.54.27.410.93434.54.04.44.610.00854446.84.04.84.610.00774450.06.04.93.080.00705866.76.05.43.080.00655871.0IO7.01.830.0064568118.0168.01.150.0050791782510.00.7270.0050Ill2803511.50.5240.00401463785013.
14、00.3870.00451805087015.00.2680.00352287179517.50.1930.003528199112019.00.1530.0032344122815021.00.1240.0032397视E班芸修18523.50.09910.00324561894型号及电压等级标称截面面积/M平方最大外径/11m20最大单位长度直流电阻/（欧km）70最小单位长度绝缘电阻/（欧k11）载流量推荐值（环境温度25）成品参考B质里/（kgkm）ZR-BV4507501.53.513.30.01025.421.62.54.27.980.00934.434.04.04.84.950.
15、00744.5506.06.43.300.00658.373IO8.01.910.005679.5132169.41.210.0046111.01872511.50.7800.00441462893513.00.5540.00381803805015.00.3860.00372255497017.50.2720.0032280754ZRzR-BvVB3OO5OOV2x0.754.6x7.024.50.01213422x1.04.8x7.418.10.01116492x1.55.4x8.412.10.01120652x2.56.2x9.87.410.01027972x46.8x11.04.610
16、.0085381302x47.2x11.54.610.0077381402x67.4x12.03.080.0070501792x68.0x13.03.080.0065501922x109.6x16.01.830.0065693063x0.754.5x9.424.50.0129.5603x1.04.8x9.818.10.01111703x1.55.4x11.512.10.01113953x2.56.2x13.57.410.010211423x4.06.8x15.04.610.085271983x4.07.2x16.24.610.077272133x6.07.4x17.03.030.0703426
17、53x6.08.0x18.03.080.0065342843x109.6x22.51.830.6555457ZR-BR450/750V2.54.27.410.113434.04.04.84.610.0094450.06.05.63.080.00855872.0107.61.830.007279127.0ZR-BVR45075OV168.81.150.0062Ill1842511.00.7270.581463043512.50.5240.0052180：的弱茁修5014.50.3840.51228548型号及电压等级标称截面面积/M平方最大外径/Jnm20最大单位长度直流电阻/（欧km）70最小
18、单位长度绝缘电阻/（欧k11）载流量推荐值（环境温度25。）成品参考r11J质里/(kkm)ZR-RVV300/300V2x0.56.239.00.01210372x0.756.626.00.OlO13473x0.56.639.00.0127.4443x0.757.026.00.OlO9.558ZR-RVVB300300V2x0.53.8x6.039.00.01210282x0.753.9x6.426.00.0101335ZR-RvV300500V2x0.757.626.00.01113582x1.07.819.50.01016662x1.58.813.30.01020892x2.511.07
19、.980.927.51373x0.758.026.00.0119.5703x1.08.419.50.01011.7803x1.59.613.30.01012.71123x2.511.57.980.009211724x0.758.626.00.011844x1.09.219.50.0101014x1.511.013.30.0101414x2.512.57.980.0092105x0.759.426.00.0111035xl.011.019.50.0101195x1.512.013.30.0101725x2.514.07.980.009257ZR-RB300500V2x0.755.0x7.626.
20、00.0111344ZR-RVS300300V2x0.34.369.20.0167.413.42x0.44.648.20.0149.017.02x0.55.839.00.01610.024.02x0.756.226.00.01413.C2x0.32.3x4.369.20.0167.4ZR-YJV电力电缆载流量表型号及电压等级ZR-YJVo.6IkV标称截面面积/rom平方参考外径/加载流量推荐值/A成品参考质量/(kgkm)空气中敷设埋地敷设4x2.511.828372114x413.037482834x614.247603764x1016.765815674x1619.1861068294x
21、2523.211513812494x3525.514116616894x5026.216519421464x7028.921324129444x9532.526028739034x12035.930132649674x15040.235236961334x18544.440641376004x24049.448648197434x30056.0569549122714x4006866283x2.5+1x1.511.628362123x4+lx2.512.737472773x6+1x413.947603633x10+1x616.164815273x16+1x1018.6851067663x25+
22、1x1622.211313711403x35+1x1624.613916414753x50+1x2527.717319819513x70+1x3531.922224626633x95+1x5036.227129335783x120+1x7039.931833445673x150+1x7045.037037555143x185+1x9549.442742268503x240+1x12054.950749287413x300+1x15062.959956011052高压交联聚氯乙烯绝缘阻燃电力电缆的载流量表，ZR-YJVsZR-YJ1.V型号ZR-YJVxZR-YJ1.V电压等级KV标称截面面积1
23、1m平方参考外径11tm工作电容/(微)ik11)载流量推荐值/A成品参考质量/(kgk11)空气q瞰设埋地敷设铜芯铝芯铜芯铝芯铜芯铝芯6/1Okv2519.70.211821422131676254653520.50.232181712682007435205021.80.262522002972369176017023.70.2930124435128611407009525.30.32344288396333141781612026.90.3637632342736816699201502S/50.364023524513952004106218530.30.42431382478426
24、2362120324032.70.474674165114572929142930034.90.515074495454843545167140037.90.565714985965214533204050041.60.60635540650556564425336300.717276047276073x2540.00.21147114162126210816243x3542.00.23166128181140251318393x5045.20.25200155215167310821503x7049.30.30248192262203391425803x9553.70.30298232312
25、242487830513x12056.40.31344267353274574434753x15060.00.32391303398308683039753x18563.60.3445135145435280134500矿物质绝缘电缆载流量表，BTTZ铜芯铜护套氧化镁矿物质绝缘电缆载流量表导体标酢被面积Nominalsectionalareaofconductormm载流ACurrentcarryingcapacityA西根导体(单相)幡芯或单芯电缆Twopiecesofconductor(single-phase)two-coreOfsingle-corecable三根导体(三相)Three
26、picosofconductor(tre-phase)多芯或单芯电缆三角形撑列Multi-coreorsingle-corecableTrianglearrangemeniI)乡：立Or,单芯电缆平列Single-coreCabI。Side-by-sidearrangementgiI：或OrP123(轻勒600V1.igmYUty5V1.52824272.53833364514447S期750VHeavy-duty750V1.53126302.542354145547536705967109681911612710711925166140154352031711875025121223070307260209r369312334120424359383150485410435185550465492
