尺寸Size
实芯导体solid conductor
绞合导体stranded conductor
直径Diameter
20℃导体电阻Conductor resistance
截面积Cross-sectional area
标称Nominal
最小Minimum
裸铜Bare
镀锡Tinned
AWG
Mils
mm
Ω/km
Cmils
40
3.1
0.079
3.07
0.078
3614
3756
9.61
0.00487
9.42
0.00477
-
39
3.5
0.089
3.47
0.088
2835
2946
12.2
0.00621
11.9
0.00603
38
4.0
0.102
3.96
0.101
2169
2254
16.0
0.00811
15.7
0.00796
37
4.5
0.114
4.46
0.113
1713
1781
20.2
0.0103
19.8
0.0100
36
5.0
0.127
4.95
0.126
1389
1443
25.0
0.0127
24.5
0.0124
35
5.6
0.142
5.54
0.141
1108
1151
31.4
0.0159
30.8
0.0156
34
6.3
0.160
6.24
0.158
873
908
39.7
0.020
38.9
0.0197
33
7.1
0.180
7.03
0.179
689
716
50.4
0.0255
49.4
0.0250
32
8.0
0.203
7.92
0.201
542
563
64.0
0.0324
62.7
0.0318
31
8.9
0.226
8.81
0.224
438
456
79.2
0.0401
77.6
0.0393
30
10.0
0.254
9.9
0.251
347
361
100
0.0507
98
0.0497
354
381
29
11.3
0.287
11.2
0.284
271
282
128
0.0647
125
0.633
277
297
28
12.6
0.320
12.5
0.318
218
227
159
0.0804
156
0.0790
223
239
27
14.2
0.361
14.1
0.358
172
179
202
198
0.100
175
188
26
15.9
0.404
0.399
138
143
253
0.128
248
140
150
25
17.9
0.455
17.7
0.450
108
112
320
0.162
314
0.159
111
199
24
20.1
0.511
19.9
0.506
85.9
89.3
404
0.205
396
87.6
94.2
23
22.6
0.574
22.4
0.569
67.9
70.6
511
0.259
501
69.2
74.5
22
25.3
0.643
0.635
54.3
56.4
640
0.324
627
55.4
59.4
21
28.5
0.724
28.2
0.716
42.7
44.4
812
0.412
796
43.6
46.9
20
32.0
0.813
31.7
0.805
33.9
35.2
1020
0.519
1000
0.509
34.6
36.7
19
35.9
0.912
35.6
0.904
26.9
28.0
1290
0.653
1264
0.641
27.4
29.1
18
40.3
1.02
40.0
1.016
21.4
22.2
1620
0.823
1588
0.807
21.8
23.2
17
45.3
1.15
44.9
1.140
16.9
17.6
2050
1.04
2009
17.3
18.3
16
50.8
1.29
50.3
1.278
13.5
14.0
2580
1.31
2528
1.28
13.7
14.6
15
57.1
1.45
56.5
1.435
10.6
11.1
3260
1.65
3195
1.62
10.9
14
64.1
1.63
63.5
1.613
8.45
8.78
4110
2.08
4028
2.04
8.62
8.96
13
72.0
1.83
71
1.80
6.69
6.97
5180
2.63
5076
2.58
6.82
7.10
12
80.8
2.05
80
2.03
5.31
5.53
6530
3.31
6399
3.24
5.43
5.64
11
90.7
2.30
90
2.29
4.22
4.39
8230
4.17
8065
4.09
4.30
4.48
10
101.9
2.588
101
2.57
3.343
3.476
10380
5.261
10172
5.16
3.409
3.546
09
114.4
2.906
113
2.87
2.652
2.730
13090
6.631
12828
6.50
2.705
2.813
08
128.5
3.264
127
3.23
2.102
2.163
16510
8.367
16180
8.20
2.144
2.230
07
144.3
3.665
3.63
1.667
1.716
20820
10.55
20404
10.34
1.700
1.768
06
162.0
4.115
160
4.06
1.323
1.361
26240
13.30
25715
13.03
1.348
1.403
05
181.9
4.620
180
4.57
1.049
1.079
33090
16.77
32428
16.43
1.070
1.113
