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When solar panels are wired in series, the array’s voltage is added together while the current (or amps) stays the same.

In the diagram above, 4 x 100w panels, each with a rated voltage of 17.9 and current of 5.72A

Wired in series could produce 71.6 volts and 5.72 amps – a total of 409 watts

A parallel connection is created when the positive terminal of one panel is connected to the positive terminal of another

In the diagram above, 4 x 100w panels, each with a rated voltage of 17.9 and current of 5.72A

Wired in parallel could produce 17.9 volts and 22.8 amps – a total of 409 watts.

The 1st pair of panels wired in series could produce 35.8 volts and 5.72 amps

The 2nd pair of panels wired in series could produce 35.8 volts and 5.72 amps