How to Connect 2 100 Watt Solar Panels
Use an MPPT controller if combining in series to take advantage of higher voltage. If panels are mounted in different directions or get uneven sun, parallel is safer.
There are two different ways you can connect multiple 100W solar panels. They are series and parallel. Connecting two, three, and four 100-watt solar panels can be intimidating. But I will tell you how to install 100 watt solar panel when you have more than one panel. Solar panels can be installed in either series or parallel circuits.
To connect 4 100W solar panels in parallel, you will have to use the following process: Firstly, you must figure out how many solar panels you will install in parallel circuits. Then it's time to connect the solar panels in parallel. For that, you have to attach the positive terminal of one panel with the positive terminal of another.
When you connect multiple solar panels in series, the voltage of each solar panel will add up, but the amperage of the panels will remain the same. On the other hand, when a parallel connection connects multiple solar panels, the amperage of the solar panels will increase, but the voltage will remain the same.
Taking the same 4 x 100 watt panels, you'd wire a pair in one string (i.e. in series), the 2nd pair in another string, then wire the two strings in parallel. When solar panels are wired in a combination of series and parallel, the voltage in each string is added together while the current (or amps) stays the same.
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