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 Technical Information -  3% Voltage Drop Charts 

 

Chart#2... 3% Voltage Drop @ 24 Volts

Sample Calculation= 50 A load 20 ft* from battery will require a minimum 4 gauge wire

Amps 5 10 15 20 25 30 40 50 60 70 80 90 100 150 200 250 300 350 400 445
Feet      
10' 18 18 16 14 12 12 10 10 10 8 8 8 6              
15' 18 16 14 12 12 10 10 8 8 6 6 6 6              
20' 18 14 12 10 10 10 8 6 6 6 6 4 4              
25' 16 12 12 10 10 8 6 6 6 4 4 4 4              
30' 16 12 10 10 8 8 6 6 4 4 4 2 2              
40' 14 10 10 8 6 6 6 4 4 2 2 2 2              
50' 12 10 8 6 6 6 4 4 2 2 2 1 1              
60' 12 10 8 6 6 4 4 2 2 1 1 1/0 1/0              
70' 12 8 6 6 4 4 2 2 1 1 1/0 1/0 2/0              
80' 10 8 6 6 4 4 2 2 1 1/0 1/0 2/0 2/0              
90' 10 8 6 4 4 2 2 1 1/0 1/0 2/0 2/0 3/0              
100' 10 6 6 4 4 2 2 1 1/0 2/0 2/0 3/0 3/0              
110'  10 6 6 4 2 2 1 0 1/0 2/0 3/0 3/0 4/0              
120'  10 6 4 4 2 2 1 0 2/0 3/0 3/0 4/0 4/0              
130'  8 6 4 2 2 2 1 0 2/0 3/0 3/0 4/0 4/0              
140'  8 6 4 2 2 1 0 2/0 3/0 3/0 4/0 4/0 x              
150'  8 6 4 2 2 1 0 2/0 3/0 3/0 4/0 4/0 x              
160'  8 6 4 2 2 1 0 2/0 3/0 4/0 4/0 4/0 x              
170'  8 6 2 2 1 1 2/0 3/0 3/0 4/0 4/0 x x              
180'                                        
190' 4 2 1 2/0 3/0 4/0 x                          
200' 4 2 1/0 2/0 3.0 4/0 x                          
Amps 5 10 15 20 25 30 40 50 60 70 80 90 100 150 200 250 300 350 400 445
*  From Battery To Load & Back to Battery
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 Revised:12/29/2008 06:55:56