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TECH TIPS
POWER CABLE CALCULATOR
TOTAL AMPERAGE
0 – 0
0 – 5
5 – 50
50 – 65
65 – 85
85 – 105
105 – 15
15 – 150
The above chart shows cable gauges to be used, if no less than a 0.5 volt drop is acceptable. If aluminium
wire or tinned wired is used, the gauges should be of an even larger size to compensate. Cable gauge size
calculation takes into account terminal connection resistance.
OHMS LAW SIMPLIFIED
1
1
1
0-4 FT
4-7 FT
7-10 FT
14
1
1
1
10
8
10
8
8
8
8
6
6
6
4
6
6
4
4
4
4
IR
W
I
WR
E
E
R
W
E
W/R
10 -1 FT
1-16 FT
10
10
8
6
6
4
4
4
4
0
0
0
E
I
2
E
W
R
I
W
2
I
R
EI
16-19 FT
19- FT
-8 FT
8
8
6
6
4
4
4
4
0
0
0
0
W
2
I
2
E
R
8
4
4
0
0
0
0
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