导线线径与电流规格
武汉国际广场
导线线径与电流规格
导线的阻抗与其长度成正⽐与线径成反⽐，请在使⽤电源时，需特别注意输⼊与输出导线的线径问题，以防⽌因电流太⼤引起过热，⽽造成意外，下列表格为导线在不同温度下的线径与电流规格表。
线径（⼤约值）
铜线温度
60o C75o C85o C60o C
电流（A）
2.5mm220202525
4mm225253030 6mm230354040 8mm240505555 14mm255657075 22mm270859595 30mm285100110110
38mm295115125130 50mm2110130145150 60mm2125150165170 70mm2145175190195 80mm2165
200215225
100mm2195230250260
80.128 3.268.360.00206
90.114 2.91 6.630.00260 AWG Number O[Inch]O[mm]O[mm2]Resistance[Ohm/m] 100.102 2.59 5.260.00328
110.0907 2.30 4.170.00413
120.0808 2.05 3.310.00521
130.0720 1.83 2.620.00657
140.0641 1.63 2.080.00829
150.0571 1.45 1.650.0104
160.0508 1.29 1.310.0132
170.0453 1.15 1.040.0166
180.0403 1.020.8230.0210
190.03590.9120.6530.0264
AWG Number O[Inch]O[mm]O[mm2]Resistance[Ohm/m] 200.03200.8120.5180.0333
210.02850.7230.4100.0420
220.02530.6440.3260.0530
230.02260.5730.2580.0668
240.02010.5110.2050.0842
250.01790.4550.1620.106
260.01590.4050.1290.134
moonglow
270.01420.3610.1020.169
280.01260.3210.08100.213
290.01130.2860.06420.268
AWG Number O[Inch]O[mm]O[mm2]Resistance[Ohm/m] 300.01000.2550.05090.339
310.008930.2270.04040.427
320.007950.2020.03200.538
330.007080.1800.02540.679
340.006310.1600.02010.856
赛思外语学校350.005620.1430.0160 1.08
360.005000.1270.0127 1.36differentiated
370.004450.1130.0100 1.72
380.003970.1010.00797 2.16
Crossupstairs
Section
area
m㎡AWG Tskdenko
specification
Construction
No./㎜φ
Acture
m㎡
Fine-wire
Conductors
VDE0295
BS6360
Class5
Column3
Extra-fine wire strands VDE0295
Class6
Column
4Column5Column6Column7
0.043020x0.050.047 0.08287x0.1270.088
0.10
7x0.14
20x0.080.106 0.101
0.14267x0.160.1418x0.1018x0.1036x0.0772x0.05 0.187x0.180.178 0.2024
7x0.20
40x0.080.22 0.20
0.2514x0.1532x0.1032x0.1065x0.07128x0.05
0.30
12x0.18
60x0.080.305 0.301
0.342217x0.160.34219x0.1542x0.1042x0.1088x0.07174x0.05 0.3812x0.2021x0.1548x0.10100x0.07194x0.05 0.520
20x0.18
100x0.080.509
0.502
16x0.2028x0.1564x0.10131x0.07256x0.05
0.7
30x0.18
150x0.080.763
0.754
24x0.2042x0.1596x0.10195x0.07384x0.05
0.818
34x0.18
42x0.160.865 0.844
1.032x0.2056x0.15128x0.10260x0.07512x0.05 1.251650x0.18 1.27
1.530x0.2584x0.15192x0.10392x0.07768x0.05
2.01437x0.26 1.96
2.550x0.25140x0.15320x0.10651x0.071280x0.05
3.51266x0.26 3.50
456x0.30224x0.15512x0.101040x0.07
5.510uza
210x0.18
105x0.265.34 5.57
684x0.30192x0.20768x0.101560x0.07
88
standfor50x0.45
154x0.267.95
8.17
1080x0.40320x0.201280x0.102600x0.07
146
88x0.45
practical
259x0.2614.0 13.75
16128x0.40512x0.202048x0.10
224supercalifragilisticexpialidocious
7x1.96
280x0.3221.12
22.51
25200x0.40800x0.203200x0.10
導線安全電流
最⼤載流量：(Current Carrying Capacity)
定義為在導體或絕緣體融化之前，所能負載之電流。由電流流過導體所產⽣之熱，將決定這條電線能負荷多少電流。⽽單芯裸銅線所能流過的電流，可以⼀直增加，直到產⽣的熱達到銅的融點。有很多因素都會影響⼀條電線所能流過之電流量，⽐較重要的如下：
導體⼤⼩：
導體截⾯積越⼤，所能負載之電流越⼤。
絕緣體：
電流所產⽣的熱，不要超過絕緣體材質的最⼤適⽤溫度。
金太阳英语
環境溫度：
