Sizing Solar Panel Fuses

A wide range of voltage ratings and ampere ratings determine the solar panel fuse size.

Sizing solar panel fuses.

If the panels are connected in series the voltage of each panel is added but the amperage stays the same. Fuses used in these systems are interchangeably known as pv fuse solar pv fuse fusible pv fuses and solar panel fuses. Enter the distance in feet from your solar panels to your battery bank charge controller. Click on calculate to see the size wire required in awg american wire gauge.

This means each seriesneeds a fuse breaker placed in the combiner box as shown here. Enter the total amps that your solar panels will produce all together. A solar fuse is a special purpose fuse used in photovoltaic pv or solar power systems. The midget fuse sizes operate from 600 to 1500.

A spare fuse is recommended with with the purchase of a fuse holder. Solar panel fusing commercially made solar panels over 50 watts have 10 gauge wires capable of handling up to 30 amps of current flow. Usually 12 24 or 48 volts. If you connect these panels in series there will be no increase in current flow so fusing is not required for this string.

Maxi fuses are typically used for charge controllers or smaller inverters. Atc fuses are used for dc loads. The size of this fuse is dependent on how many solar panels you have and how they are connected series parallel or series parallel.