Table of wire size and current capacity

Please be aware - this is not an official list of any type - I got this from a paper copy and may contain errors - if your life depends on the wire you want to use - check the information in this table with a "Official" publication. I make no promises of anything printed here being accurate and is presented for easy reference only.

If you want to calculate the resistance per foot of a given wire Click Here!


AWG gauge

Diameter Inches

Diameter mm

Ohms per 1000 ft

Ohms per km

Maximum amps - chassis wiring

Maximum amps - power transmission

OOOO

0.46

11.684

0.049

0.16072

380

302

OOO

0.4096

10.40384

0.0618

0.202704

328

239

OO

0.3648

9.26592

0.0779

0.255512

283

190

0

0.3249

8.25246

0.0983

0.322424

245

150

1

0.2893

7.34822

0.1239

0.406392

211

119

2

0.2576

6.54304

0.1563

0.512664

181

94

3

0.2294

5.82676

0.197

0.64616

158

75

4

0.2043

5.18922

0.2485

0.81508

135

60

5

0.1819

4.62026

0.3133

1.027624

118

47

6

0.162

4.1148

0.3951

1.295928

101

37

7

0.1443

3.66522

0.4982

1.634096

89

30

8

0.1285

3.2639

0.6282

2.060496

73

24

9

0.1144

2.90576

0.7921

2.598088

64

19

10

0.1019

2.58826

0.9989

3.276392

55

15

11

0.0907

2.30378

1.26

4.1328

47

12

12

0.0808

2.05232

1.588

5.20864

41

9.3

13

0.072

1.8288

2.003

6.56984

35

7.4

14

0.0641

1.62814

2.525

8.282

32

5.9

15

0.0571

1.45034

3.184

10.44352

28

4.7

16

0.0508

1.29032

4.016

13.17248

22

3.7

17

0.0453

1.15062

5.064

16.60992

19

2.9

18

0.0403

1.02362

6.385

20.9428

16

2.3

19

0.0359

0.91186

8.051

26.40728

14

1.8

20

0.032

0.8128

10.15

33.292

11

1.5

21

0.0285

0.7239

12.8

41.984

9

1.2

22

0.0254

0.64516

16.14

52.9392

7

0.92

23

0.0226

0.57404

20.36

66.7808

4.7

0.729

24

0.0201

0.51054

25.67

84.1976

3.5

0.577

25

0.0179

0.45466

32.37

106.1736

2.7

0.457

26

0.0159

0.40386

40.81

133.8568

2.2

0.361

27

0.0142

0.36068

51.47

168.8216

1.7

0.288

28

0.0126

0.32004

64.9

212.872

1.4

0.226

29

0.0113

0.28702

81.83

268.4024

1.2

0.182

30

0.01

0.254

103.2

338.496

0.86

0.142

31

0.0089

0.22606

130.1

426.728

0.7

0.113

32

0.008

0.2032

164.1

538.248

0.53

0.091

Metric 2.0

0.00787

0.200

169.39

555.61

0.51

0.088

33

0.0071

0.18034

206.9

678.632

0.43

0.072

Metric 1.8

0.00709

0.180

207.5

680.55

0.43

0.072

34

0.0063

0.16002

260.9

855.752

0.33

0.056

Metric 1.6

0.0063

0.16002

260.9

855.752

0.33

0.056

35

0.0056

0.14224

329

1079.12

0.27

0.044

Metric 1.4

.00551

.140

339

1114

0.26

0.043

36

0.005

0.127

414.8

1360

0.21

0.035

Metric 1.25

.00492

0.125

428.2

1404

0.20

0.034

37

0.0045

0.1143

523.1

1715

0.17

0.0289

Metric 1.12

.00441

0.112

533.8

1750

0.163

0.0277

38

0.004

0.1016

659.6

2163

0.13

0.0228

Metric 1

.00394

0.1000

670.2

2198

0.126

0.0225

39

0.0035

0.0889

831.8

2728

0.11

0.0175

40

0.0031

0.07874

1049

3440

0.09

0.0137

 

 

 

 

 

 

 

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Page last updated 8/24/2005