AWG 线规线径对照表


AWG(American wire gauge)美国线规,是一种区分导线直径的标准,又被称为 Brown & Sharpe线规。这种标准化线规系统于1857年起在美国开始使用。AWG前面的数值(如24AWG、26AWG)表示导线形成最后直径前所要经过的孔的数量,数值越大,导线经过孔的等级越高,导线的直径也就越小。粗导线具有更好的物理强度和更低的电阻,但是导线越粗,制作电缆需要的就越多,这会导致电缆更沉、更难以安装、价格也更贵。电缆设计的挑战在于使用尽可能小直径的导线(减小成本和安装复杂性),而同时保证在必要电压频率之下实现导线的最大容量

线号
AWG
公制线径
mm
英制线径
inch
截面积mm^2电阻值
Ω/km
持续载流量
A
瞬时载流量
A
4/0 *11.6840.4600107.22000.17643.3857.8
3/0 *10.4040.409685.01000.21510.1680.1
2/0 *9.2660.364867.43000.26404.6539.4
1/0 *8.2520.324953.49000.33320.9427.9
17.3480.289342.41000.42254.5339.3
26.5430.256733.62000.53201.7269.0
35.8270.229426.67000.66160.0213.4
45.1890.204321.15000.84126.9169.2
54.6200.181916.77001.06100.6134.2
64.1150.162013.30001.3379.8106.4
73.6650.144310.55001.6863.384.4
83.2640.12858.37002.1150.267.0
92.9060.11446.63002.6739.853.0
102.5880.10195.26003.3631.642.1
112.3040.09074.17004.2425.033.4
122.0520.08083.33205.3120.026.7
131.8290.07202.62706.6915.821.0
141.6280.06412.07508.4512.516.6
151.4500.05711.646010.69.913.2
161.2900.05081.318013.57.910.5
171.1510.04531.026016.36.28.2
181.0240.04030.810721.44.96.5
190.9120.03590.566726.93.404.5
200.8130.03200.518933.93.114.2
210.7240.02850.411642.72.473.29
220.6430.02530.324754.31.952.60
230.5740.02260.258866.81.552.07
240.5110.02010.204789.41.231.64
250.4550.01790.16241060.9741.299
260.4040.01590.12811430.7691.025
270.3610.01420.10211680.6130.817
280.3200.01260.08042270.4820.643
290.2870.01130.06472890.3880.518
300.2540.01000.05073610.3040.406
310.2260.00890.04014300.2410.321
320.2030.00800.03165830.1900.253
330.1800.00710.02559440.1530.204
340.1600.00630.02019560.1210.161
350.1420.00560.016912000.1010.135
360.1270.00500.012715300.0760.102
370.1140.00450.009817880.0590.078
380.1020.00400.008124000.0490.065
390.0890.00350.006227400.0370.050
400.0790.00310.004940800.0290.039
410.0710.00280.004042640.0240.032
420.0640.00250.003263000.0190.026
430.0560.00220.002569360.0150.020
440.0510.00200.002091800.0120.016
450.0460.00180.0016102000.00960.0128
460.0410.00160.0013163000.00780.0104

* 4/0表示 0000,3/0表示 000,2/0表示 00,1/0表示 0

上表中的线径均指线的外径

单位换算:1 inch = 25.4 mm ;1 inch = 1000 mil(密尔)

正常载流值(A) = S截面积(mm^2)*K [K取6.0]

最大载流值(A) = S截面积(mm^2)*K [K取8.0]