Electrical system
87
Calculation based on max. permitted total voltage drop in all cables between pos. terminal to the consumer and
consumer back to negative terminal.
Total voltage drop should not exceed 0.4 Volt.
Calculating the cable area for power consumers
Measure the distance from the terminal block to the
accessory. Then multiply the distance by two. Then
calculate the area in accordance with the table below.
Example: If a 12 V refrigerator consumes 45 Watts
and the distance between the terminal block and the
refrigerator is three metres, a straight line should be
drawn between number 6 on the metre scale, and
number 45 on the load scale. The line passes the area
scale at 1.5 which is equal to the needed area.
Length
(meters)
Area
mm²
Load
Amp Watts
12V 24V
Length
(meters)
Area
mm²
Load
Amp Watts
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