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teeznu's avatar
teeznu
Explorer
Apr 19, 2016

Solar Panels- Wired in Series vs. Parallel question

So the debate between wiring panels in Series or Parallel. Please tell me the benefits of wiring either way and if there are negatives, please educate me on that as well. Thanks to those that respon...
Boon_Docker's avatar
Boon_Docker
Explorer III
Apr 20, 2016
Building a high voltage systems in series makes sense if you want to use smaller gauge wire. If you had 1000 watts of solar you would need some pretty hefty wire to the controller in parallel.

400 watts and above = series wired with MPPT controller.
400 watts or less = parallel wired with PWM controller if using 12v panels.

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