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Wire Sizing

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Wondering what size of wire you need to connect to your wind turbine/solar panel or use for wiring up your controls? The chart below can be used as a good reference to help you decided. This information is only for reference and other factors should be taken into consideration such as, voltage drop, thermal conductivity, insulation temperature, etc.

Please ensure to review any government regulation that may affects the way you wire of your system.

AWG gauge

Conductor
Diameter Inches

Conductor
Diameter mm

Ohms per 1000 ft.

Ohms per km

Short Line Wiring (less than 3ft): Maximum current (amps)

Transmission Lines: Maximum current (amps)

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

 

Last Updated on Saturday, 03 December 2011 02:11  

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