Sizing Solar Panel Fuses

The size of this fuse is dependent on how many solar panels you have and how they are connected series parallel or series parallel.

Sizing solar panel fuses.

Solar panel fusing commercially made solar panels over 50 watts have 10 gauge wires capable of handling up to 30 amps of current flow. A spare fuse is recommended with with the purchase of a fuse holder. Enter the distance in feet from your solar panels to your battery bank charge controller. If the panels are connected in series the voltage of each panel is added but the amperage stays the same.

Enter solar panel output voltage. Click on calculate to see the size wire required in awg american wire gauge. A solar fuse is a special purpose fuse used in photovoltaic pv or solar power systems. This means each seriesneeds a fuse breaker placed in the combiner box as shown here.

Maxi fuses are typically used for charge controllers or smaller inverters. Atc fuses are used for dc loads. Enter the total amps that your solar panels will produce all together. Mini fuses are typically used for small system components like battery management systems or monitors.

If you connect these panels in series there will be no increase in current flow so fusing is not required for this string. Fuses used in these systems are interchangeably known as pv fuse solar pv fuse fusible pv fuses and solar panel fuses. A wide range of voltage ratings and ampere ratings determine the solar panel fuse size.