Wire Size Chart
Choosing the Proper Wire Size is Important
Use the chart above to determine the proper wire size for your project.
Wire Sizing Facts
Solar Panels are usually run in strings using a #10 AWG stranded wire.
If there are multiple strings, then often the wire size will increase in the combiner box to a #8 AWG or #6 AWG.
Wire size from the charge controller to the batteries depends on the Amps (current) that will be flowing.
Using proper wire sizing is critical to a successful Renewable Energy installation. Too small of a wire can create excessive voltage drop (efficiency loss) on your system.
It is also dangerous because excess heat can build up in your system causing a safety hazard and fire risk.
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