How To Wire A Solar Panel System

Wire the solar panel.

How to wire a solar panel system.

Even though you ll be hiring a professional it helps to understand what s going on. With parallel solar panels 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. Wiring solar panels in parallel causes the amperage to increase but the voltage remains the same. Use a wire sizing calculator for solar arrays that will figure out the size of wire you need.

At the back sides of the solar panel a small junction box is there with a positive and negative sign for polarity. Expect the entire process of installing a full scale photovoltaic pv system to take 90 days or more. As clearly visible in the picture it will be enough to wire the positive pole of one panel to the positive pole of the other one and then wire the negative pole of one panel to the negative pole of the other one. If we have two solar panels with same voltage and power the connection will be very simple.

Solar panel wiring aka stringing and how to string solar panels together is a fundamental topic for any solar installer. The following list outlines all the things you need to do. The following wiring diagram shows that the two 12v 10a 120w solar panels connected in parallel will charge the two 12v 100ah parallel connected batteries as well as power up the ac load through batteries and inverter during the day in normal sunshine. You need to understand how different stringing configurations impact the voltage current and power of a solar array.

A great way to go about choosing the wire thickness for your solar system is to buy solar panel wire big enough to cope with the biggest current amp drawing appliance you have and using that wire for all the other runs to the ac breaker panel.