Solar Panel To Charge Controller Wire Size

Enter solar panel output voltage.

Solar panel to charge controller wire size. Charge controllers are sized depending on your solar array s current and the solar system s voltage. Typically charge controllers come in 12 24 and 48 volts. We get calculated that we need a copper wire of 0 128 diameter in inches and a recommended maximum current of 29a defined by choosing solar system voltage. That means we have 1440w of power.

To use the wire size calculator just follow these 4 simple steps. If you have 3 solar panels rated at 6 amps each mounted 30 feet from the charge controller then you would move down the chart to 18 amps 3 panels 6 amps and across to 32 5 closest to 30 and then up the chart to 4. A typical recommendation is to limit the solar array to 110 125 of the maximum controller rating. We then go ahead and calculate the 110 125 of the maximum controller rating to get a range of 1584w to 1800w.

The wires from the charge controller to the battery bank can generally be the same or larger gauge than the main set from the pv array. Enter the total amps that your solar panels will produce all together. Usually 12 24 or 48 volts. You have a 60a mppt charge controller and a nominal 24vdc battery.

Estimated cable length 12 4m needed for connecting the solar array to the next solar power system unit for the example charge controller. Enter the distance in feet from your solar panels to your battery bank charge controller. If multiple panels are combined in parallel then a three to eight awg combiner wire set is generally needed to safely transfer the power to a charge controller or gti.