1968 Shelby GT500

Which Gauge

Need to know what size wire to use for an application?

Electrical Draw

Distance from power supply
to the device and back to ground

AMPS

WATTS

3ft

5ft

7ft

10ft

15ft

20ft

25ft

30ft

40ft

50ft

75

100ft

12V

12V

Minimum Gauge Recommended

1

12

18

18

18

18

18 

18

18

18

18

18

18

18

5

60

18

18

18

18

18

18

18

18

16

14

12

12

10

120

18

18

18

18

16

16

16

14

12

12

10

10

15

180

18

18

18

18

14

14

12

12

12

10

8

8

20

240

16

16

16

16

14

12

10

10

10

10

8

8

25

300

14

14

14

12

12

12

10

10

10

8

6

6

30

360

12

12

12

12

10

10

10

10

10

6

4

4

35

420

12

12

12

10

10

10

10

10

8

6

6

4

40

480

10

10

10

10

10

10

8

8

6

6

4

2

50

600

8

8

8

8

8

8

8

8

6

6

2

2

100

1200

4

4

4

4

4

4

2

2

2

2

1/0

1/0

150

1800

2

2

2

2

2

2

1

1

1

1/0

2/0

2/0

200

2400

1/0

1/0

1/0

1/0

1/0

1/0

2/0

2/0

2/0

2/0

4/0

4/0

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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