12 Volt Wiring Distance & Gauge Chart

12 Volt Wiring Distance and Gauge Chart

Just like 110 house current the type of wire must be matched to the voltage/amperage carried.   This chart is configured for a 5% voltage loss for maximum one way travel.   Simply find the amperage on the left...then look to the right in the same row for the distance traveled in feet (estimated) and then go up to find the gauge wire needed.  

Example:   4 amps traveling 542 feet would need 1 guage wire.  


 

 

Wire Gauge Size

 
Amps

14

12

10

8

6

4

2

1

0

00

000

0000

1

106

169

269

427

679

1080

1717

2166

2730

3444

4342

5475

2

53

85

134

214

340

540

859

1083

1365

1722

2171

2738

4

27

42

67

107

170

270

429

542

682

861

1086

1369

6

18

28

45

71

113

180

286

361

455

574

724

913

8

13

21

34

53

85

135

215

271

341

430

543

684

10

11

17

27

43

68

108

172

217

273

344

434

548

15

7

11

18

28

45

72

114

144

182

230

289

365

20

—

8

13

21

34

54

86

108

136

172

217

274

25

—

—

11

17

27

43

69

87

109

138

174

219

30

—

—

9

14

23

36

57

72

91

115

145

183

35

—

—

—

12

19

31

49

62

78

98

124

156

40

—

—

—

—

17

27

43

54

68

86

109

137

45

—

—

—

—

15

24

38

48

61

77

96

122

50

—

—

—

—

14

22

34

43

55

69

87

110