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Cable Size Chart Reference Guide

How To Use The Cable Chart

1What is Your DC Amp Requirement?

Locate the current flow in amp of your circuit along the top of the chart.

2What Type of Circuit Type Do You Have?

Select the correct circuit type. Examples of ( Non Critical ) and ( Critical ) circuits are below. There are many more examples but these are a few that you would find in RV, Marine and Solar applications.

Examples of Critical

  • Panel Main Feed
  • Solar Panel Feed
  • Essential Operational Electronics
  • Bilge Blowers

Examples of Non Critical

  • General Lighting
  • General Appliances
  • Personal Electronics
  • Pumps
3Determine Your Cable Length Needed

Find the correct cable length range. Please note that the cable length is total length to the application multiplied times 2. This means if you cable length to your application is 10ft then you will look at a the 20ft options. This is because the positive is 10ft and the negative is 10ft for a total length of 20ft.

4Find Your Correct Cable Size

Intersect the DC Amps needed with the total cable length range determined from last step to identify the correct color code.

5Cable Conversion Table

Match the color code from step 4 to the cable chart to find the cable size and specifications.

Standard
Units
AWG
0000 or 4/0
000 or 3/0
00 or 2/0
0 or 1/0
1
2
4
6
8
10
12
14
16
Metric
120
95
70
50
35
25
16
10
6
4
2.5
1.5
Diameter (mm)
11.68
10.4
9.27
8.25
7.35
6.54
5.19
4.11
3.26
2.59
2.05
1.63
1.29
Cross Section (mm2)
107.1
84.9
67.5
53.5
42.4
33.6
21.2
13.3
8.4
5.3
3.3
2.1
1.3
Image Code
4/0
3/0
2/0
1/0
1
2
4
6
8
10
12
14
16
1. Sometimes gauges are represented as follow (0000 or 4/0). AWG stands for American Wire Gauges. Metric Wire Size is closest equivalent to AWG wire size
2. Cross Section or Diameter Squared is the area of the wire when cut flat square across the wire. The formula is Pi*r2
Measurements of Diameter and Cross Section of cable of cable does not include insulation.
Cable Lengths in Feet & Meters
10% Voltage Drop
NON CRITICAL
3% Voltage Drop
CRITICAL
DC Amps
ft
m
ft
m
5A
10A
15A
20A
25A
30A
40A
50A
60A
70A
80A
90A
100A
120A
150A
200A
0 - 20 ft
0 - 6.1 m
0 - 6 ft
0 - 1.8 m
16
16
14
14
12
10
8
6
6
6
4
4
4
2
1
2/0
30 ft
9.1 m
10 ft
3 m
16
14
12
12
10
10
8
6
6
6
4
4
4
2
1
2/0
50 ft
15.2 m
15 ft
4.6 m
16
12
10
10
8
8
6
6
4
4
4
2
2
2
1
2/0
65 ft
19.8 m
20 ft
6.1 m
14
10
10
8
6
6
6
4
4
2
2
2
2
1
1/0
2/0
80 ft
24.4 m
25 ft
7.6 m
12
10
8
6
6
6
4
4
2
2
2
1
1
1/0
2/0
3/0
100 ft
30.5 m
30 ft
9.1 m
12
10
8
6
6
4
4
2
2
1
1
1/0
1/0
2/0
3/0
4/0
130 ft
39.6 m
40 ft
12.2 m
10
8
6
6
4
4
2
2
1
1/0
1/0
2/0
2/0
3/0
4/0
4/0
165 ft
50.3 m
50 ft
15.2 m
10
6
6
4
4
2
2
1
1/0
2/0
3/0
3/0
3/0
4/0
4/0
200 ft
61 m
60 ft
18.3 m
10
6
6
4
2
2
1
1/0
2/0
3/0
3/0
4/0
4/0
4/0
70 ft
21.3 m
8
6
4
2
2
1
1/0
2/0
3/0
3/0
4/0
4/0
80 ft
24.4 m
8
6
4
2
2
1
1/0
2/0
3/0
4/0
4/0
90 ft
27.4 m
8
4
2
2
1
1/0
2/0
3/0
4/0
4/0
100 ft
30.5 m
6
4
2
2
1
1/0
2/0
3/0
4/0
110 ft
33.5 m
6
4
2
1
1/0
1/0
3/0
4/0
4/0
120 ft
36.3 m
6
4
2
1
1/0
2/0
3/0
4/0
130 ft
39.6 m
6
2
2
1
1/0
2/0
3/0
4/0