DC cable sizing calculator


The size of DC cabling you use with your solar panel array or wind turbine system is very important. If cable of too thin a diameter is used, this can lead to heating of the wire. At best, this can seriously impact efficiency through wasted energy and at worst, it can cause a fire and other damage to your system.


Our DC cable sizing tool will help ensure you select the right cable for your application. Please choose the voltage of your system, the number of amps and the length of cable required.


Important: please note that the cable size that will be recommended is a minimum - it's advisable to select a larger diameter cable (next size up) where possible.


Select the voltage of your system:


12 Volt DC

24 Volt DC

48 Volt DC





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