Series Vs Parallel Solar Panels

If you answered yes to this question we would recommend connecting your panels in parallel.

Series vs parallel solar panels.

Here are the fundamental differences between wiring solar panels in series vs. This is called a string. In fact it s the exact opposite of connecting in series. A series wired circuit will use a single wire to connect.

Since the two 5a 40v series strings are then wired in parallel we add the amps while not changing the volts because parallel wired solar panels or series strings get their amps added while their volts remain the same. When you do a series parallel connection on your solar system you need to parallel two or more equal sized series strings together. Meanwhile a parallel wired system will have multiple wires to connect it into the grid. When doing a series parallel connection you are essentially paralleling 2 or more equal strings together.

The higher voltage helps with the voltage drop caused by the large distance and allows the amperage to reach the controller efficiently. 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 and 20 amps. Series circuits have only one path for current to travel along. Please see diagram below.

For series at the 57 volts and 9 amps we can use 10 gauge wire for anything under 70 feet from the panels to the charge controller. Unlike connecting in series connecting in parallel allows the voltage to stay the same but the current adds up. Another consideration between series wired and parallel wired is the amount of wires that are used to connect the solar system into the grid. A series parallel connection is accomplished by using both a series and a parallel connection.

If you are connecting two 100 watt panels in series and each panel has an output of 18 9 volts you will end up with 200w 37 8 volts and 5 29 amps under optimum conditions. Every time you group panels together in series whether is 2 4 10 100 etc. In parallel we can use 10 gauge wire from the solar panelsto the combiner box but only if the longest wire length is shorter than 24 feet. With the help of these terminals you can connect the solar panels in the desired fashion.

When wiring solar panels in parallel the amperage current is additive but the voltage remains the same. So let s start with the series wiring of a solar panel system as it is less complicated than the parallel wiring. Solar cells can also be arranged in parallel where each solar panel is connected to every other panel in the circuit.