How To Tie Solar Panels Together

In a large size solar panel this junction box has terminal wires with mc4 connector but for small size panel you have to connect the junction box with external wires.

How to tie solar panels together. The red line is the positive connection to the panels. At the back sides of the solar panel a small junction box is there with a positive and negative sign for polarity. Wire the solar panel. The clips should hold the wires in place during strong winds.

Use cable clips to secure wiring from solar panels and micro inverters power optimizers. 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. Do not allow exposed wiring to make contact with the roof surface. If we have two solar panels with same voltage and power the connection will be very simple.

You simply need to do some research and purchase a controller that is capable of handling both systems. Stringing solar panels in series involves connecting each panel to the next in a line as illustrated in the left side of the diagram above. Connect the solar panels either directly to a power inverter and then connect it to the home grid or connect the inverter to the battery and then to the home power grid. This power inverter converts the solar energy into energy that is consumable at home.

Just like a typical battery you may be familiar with solar panels have positive and negative terminals. 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. 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. You will see a symbol that looks like a triangle pointing down at a horizontal line.

The positive wires are connected to a positive connector within a combiner box and the negative wires are connected to the negative connector. Connecting solar panels in series. Match the solar panel holes with the stand platform holes and screw them together. Connecting in series means joining the positive terminal of a solar panel to the negative terminal of the next solar panel until eventually you are left with one free positive and one free negative terminal of the array which are to be connected to the input either of the inverter in case of a grid tied system without a battery backup or the charge controller in case of a grid tied system with a battery backup or off grid solar panel system.

The set up is fairly straightforward and will vary slightly based on the individual energy systems that you are using.