How To Wire 2 Solar Panels In Parallel

The positive wires are connected to a positive connector within a combiner box and the negative wires are connected to the negative connector.

How to wire 2 solar panels in parallel.

Connect all the positive terminals of all the solar panels together and all the negative terminals of all the panels together. To wire two or more solar panels and batteries in parallel simply connect the positive terminal of solar panel or battery to the positive terminal of solar panel or battery and vise versa respectively as shown in the fig below. The solar panels are usually designed that they can handle being backfed from one panel but if you have a whole bunch you do run the risk of ruining your solar panel. You do not want to wire more than 2 panels in parallel using couplers because this does not give you over current protection between the two panels.

When solar panels are wired in parallel the positive terminal from one panel is connected to the positive terminal of another panel and the negative terminals of the two panels are connected together.