American wire
gauge (AWG) chart
Updated July 5,
2011
Below we offer a table of wire
gauge data. What's this got to do with microwaves? If you gotta
ask, you must be one of those antenna nerds... last time we checked,
wire is still needed to bring power to all those "wireless"
prototypes!
The diameter data we reference
a table we found on Coilcraft's
web site (thanks, Dudes!) We calculated the ohms/meter and ohms/foot
based on the conductivity of pure copper (the actual resistance
will be slightly more).
Here's some AWG
trivia: the AWG scale was once called the Brown and Sharpe (B&S)
wire gauge. The AWG system is a geometrical progression where each
larger size has 26% more area than the previous size.
The maximum DC current we found
on tpub.com, so if it's wrong don't blame us! The values are for
insulated wire, you can achieve higher current levels if you use
bare wire, just don't kill yourself.
The table is for unstranded wire.
We'll add a table on stranded wire later.
|
AWG
|
Diameter
(mils)
|
Diameter
(mm)
|
Area (mils^2)
|
Area (mm^2)
|
Ohms/meter
|
Ohms/foot
|
Maximum
DC current* (A)
|
|
50
|
1.00
|
0.025
|
0.785
|
0.00049
|
34.08208
|
10.38822
|
|
|
49
|
1.10
|
0.028
|
0.950
|
0.00062
|
27.17002
|
8.28142
|
|
|
48
|
1.24
|
0.031
|
1.208
|
0.00075
|
22.16576
|
6.75612
|
|
|
47
|
1.40
|
0.036
|
1.539
|
0.00102
|
16.43619
|
5.00975
|
|
|
46
|
1.57
|
0.040
|
1.936
|
0.00126
|
13.31331
|
4.05790
|
|
|
45
|
1.76
|
0.045
|
2.433
|
0.00159
|
10.51916
|
3.20624
|
|
|
44
|
2.00
|
0.051
|
3.142
|
0.00204
|
8.18966
|
2.49621
|
|
|
43
|
2.20
|
0.056
|
3.801
|
0.00246
|
6.79251
|
2.07036
|
|
|
42
|
2.50
|
0.064
|
4.909
|
0.00322
|
5.20051
|
1.58512
|
|
|
41
|
2.80
|
0.071
|
6.158
|
0.00396
|
4.22561
|
1.28797
|
|
|
40
|
3.10
|
0.079
|
7.548
|
0.00490
|
3.41312
|
1.04032
|
|
|
39
|
3.50
|
0.089
|
9.621
|
0.00622
|
2.68922
|
0.81967
|
|
|
38
|
4.00
|
0.102
|
12.57
|
0.00817
|
2.04741
|
0.62405
|
|
|
37
|
4.50
|
0.114
|
15.90
|
0.01021
|
1.63907
|
0.49959
|
|
|
36
|
5.00
|
0.127
|
19.63
|
0.01267
|
1.32068
|
0.40254
|
|
|
35
|
5.60
|
0.142
|
24.63
|
0.01584
|
1.05640
|
0.32199
|
|
|
34
|
6.30
|
0.160
|
31.17
|
0.02011
|
0.83208
|
0.25362
|
|
|
33
|
7.10
|
0.180
|
39.59
|
0.02545
|
0.65745
|
0.20039
|
|
|
32
|
8.00
|
0.203
|
50.27
|
0.03237
|
0.51691
|
0.15755
|
0.32
|
|
31
|
8.90
|
0.226
|
62.21
|
0.04011
|
0.41705
|
0.12712
|
|
|
30
|
10.00
|
0.254
|
78.54
|
0.05067
|
0.33017
|
0.10064
|
0.52
|
|
29
|
11.30
|
0.287
|
100.3
|
0.06469
|
0.25861
|
0.07882
|
|
|
28
|
12.60
|
0.320
|
124.7
|
0.08042
|
0.20802
|
0.06340
|
0.83
|
|
27
|
14.20
|
0.361
|
158.4
|
0.10235
|
0.16345
|
0.04982
|
|
|
26
|
15.90
|
0.404
|
198.6
|
0.12819
|
0.13051
|
0.03978
|
1.3
|
|
25
|
17.90
|
0.455
|
251.6
|
0.16260
|
0.10289
|
0.03136
|
|
|
24
|
20.10
|
0.511
|
317.3
|
0.20508
|
0.08158
|
0.02486
|
2.1
|
|
23
|
22.60
|
0.574
|
401.1
|
0.25877
|
0.06465
|
0.01971
|
|
|
22
|
25.30
|
0.643
|
502.7
|
0.32472
|
0.05152
|
0.01570
|
5
|
|
21
|
28.50
|
0.724
|
637.9
|
0.41169
|
0.04064
|
0.01239
|
|
|
20
|
32.00
|
0.813
|
804.2
|
0.51912
|
0.03223
|
0.00982
|
7.5
|
|
19
|
35.90
|
0.912
|
1012.2
|
0.65325
|
0.02561
|
0.00781
|
|
|
18
|
40.30
|
1.020
|
1275.6
|
0.81713
|
0.02047
|
0.00624
|
10
|
|
17
|
45.30
|
1.150
|
1611.7
|
1.03869
|
0.01611
|
0.00491
|
|
|
16
|
50.80
|
1.290
|
2026.8
|
1.30698
|
0.01280
|
0.00390
|
13
|
|
15
|
57.10
|
1.450
|
2560.7
|
1.65130
|
0.01013
|
0.00309
|
|
|
14
|
64.10
|
1.630
|
3227.1
|
2.08672
|
0.00802
|
0.00244
|
17
|
|
13
|
72.00
|
1.830
|
4071.5
|
2.63022
|
0.00636
|
0.00194
|
|
|
12
|
80.80
|
2.050
|
5127.6
|
3.30064
|
0.00507
|
0.00154
|
23
|
|
11
|
90.70
|
2.300
|
6461.1
|
4.15476
|
0.00403
|
0.00123
|
|
|
10
|
101.90
|
2.600
|
8155.3
|
5.30929
|
0.00315
|
0.00096
|
33
|
|
|
|
|
|
|
|
|
|
