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How to Wire Solar Panels in Series

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How to Wire Solar Panels in Series

There are three ways to wire a solar panel array; series, parallel, and series-parallel. This blog post is not going to cover when to use which one, but this blog post will show you, once you’ve made that decision, how to wire your solar panels in a series array.

Wiring solar panels in series simply means that you are going to connect the positive wire from one solar panel to the neighboring solar panel. The remaining positive and negative wires on the ends of the array will then be connected to the charge controller.

Here is a video that will guide you through this process and below the video, I have several examples of how to wire two to six solar panels in series.

How to Wire Solar Panels in Series Video

How to Wire Two Solar Panels in Series

How to Wire Three Solar Panels in Series

How to Wire Four Solar Panels in Series

How to Wire Five Solar Panels in Series

How to Wire Six Solar Panels in Series

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How to Wire Solar Panels in Parallel


Frank

Saturday 17th of April 2021

Hi Nate. Great DIY info. Thanks. Question which is the best in line circuit breaker to use on the following? I get confused on the breakers I see being used rated at 12 to 24 volts. I have 2 x 330 watt solar panels in series with a Vmp of 34.6 volts Voc of 41.0 volts Imp of 9.55 Amps Isc 10.33 Amps max input to my solar controller generator is 700 watts, max current of 12 Amps, with a DC Voltage of 35 to 150 Volts

Mario Traina

Friday 26th of March 2021

Greetings. I've watched your video on connecting two solar panels in series, but I'm wondering if there's anything I need to know in doing this with a Renogy 200W Suitcase system? The rear of the panels have the little junction boxes connecting them in parallel from the factory, which then go into an MPPT charge controller. The reason for me wanting to this, is that I cannot get enough voltage to charge my Bluetti AC200 Power Station. It was suggested however, that if I change the configuration to Series, I should get double (24V) enough to get something into the Bluetti. I would also like a simple MC-4 connection solution so that I can switch back to the original configuration when wanting to charge my 12V RV battery for instance. Can you recommend which parts I would need to accomplish this please? Ever so grateful... Cheers

Stan Baucum

Thursday 18th of February 2021

Installing 32 LG 350w Neon 2 to inverter 300 feet away. What AWG wire should I use between them and can I run one wire from 32 panels or run two wires from 16 panels each?

Les

Thursday 3rd of December 2020

How far away can the solar panels be away from the controllers? Thanks

Nate Yarbrough

Friday 4th of December 2020

They can be pretty far away. It depends on the voltage & ampacity flowing through the wire from the panels to the charge controller. Play around with some of those numbers with this calculator: https://www.explorist.life/wire-sizing-calculator/

Wanda Carson

Monday 3rd of August 2020

It would be nice if you would just let me know what charge controller and inverter I need for the 3 Renogy 300 watt 24 volt solar panels I purchased. Actually got 6 300 watt panels for 2 different locations. I am lost here. I have electrician in family that can hook up, but that looks like the simple part. I filled out solar charger calculator but am not sure. RNG-300D-G1 solar panels. I purchased from Home Depot.

Nate Yarbrough

Tuesday 4th of August 2020

Sure! You can use those panels with this setup here: https://www.explorist.life/3000w-inverter-400-600ah-400-to-1200w-solar-camper-solar-kit