Wiring Two Solar Panels Together

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.

Wiring two solar panels together.

Wiring solar panels in a parallel circuit. Both have their own purpose and applications and both have different outcomes when hooking up solar panels of different wattage together. 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 you had 4 solar panels in parallel and each was rated at 12 volts and 5 amps the entire array would be 12 volts at 20 amps.

By connecting multiple solar panels in series we increase the system voltage. When solar panels are wired in series the voltage of the panels adds together but the amperage remains the same. When you intend to wire two panels produced by different vendors the vendors are not the problem. When a solar installer wires your solar panels in a series each panel is connected to the next in a string the total voltage of each solar panel is summed together but the amps of electrical current stay the same.

Solar panel wiring aka stringing and how to string solar panels together is a fundamental topic for any solar installer. Firstly lets take a look at connecting solar panels in series. Solar panels are usually connected in series to obtain higher output voltage. You need to understand how different stringing configurations impact the voltage current and power of a solar array.

When you wire in series there is just a single wire leading from the roof for each string. If we have two solar panels with same voltage and power the connection will be very simple. During shading night when there is no generating power from solar panels the battery stored energy will be used as a backup power and it. The problem is in different electrical characteristics of the panels together with different performance degradation.

So if you connect two solar panels with a rated voltage of 40 volts and a rated amperage of 5 amps in series the voltage of the series would be 80 volts while the amperage would remain at 5 amps. There are two ways to wire up solar panels. We put solar panels together to increase the solar generated power. After these clarifications let s see how the series connection takes place.