How To Wire 3 Solar Panels Together

The white line is the negative connection all 3 panel negative wires are just simply tied together and to the wire that runs back to the negative connection on the charge controller.

How to wire 3 solar panels together.

If you look at the arrows along the white and red lines they are showing the direction of flow. Solar panel wiring aka stringing and how to string solar panels together is a fundamental topic for any solar installer. 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. Looking at the picture it is possible to understand the scheme of this connection.

You need to understand how different stringing configurations impact the voltage current and power of a solar array.