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rikesh avatar image
rikesh asked

Which MPPT for 8x400w Sunpower Maxeon3 solar panels

I have

8x400w Sunpower maxeon3 panels which have a VOC of 75.6 so would like your suggestion on the Victron MPPT to use.

VOC-75.6

I tried the calculator but having difficulty ..

Thinking - a DC-coupled - 2 panels in parallel on each of the 4 x 100/20 48V Smart solar charger controller.

Any suggestions??

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MPPT ControllersMPPT SmartSolar
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Matthias Lange - DE avatar image Matthias Lange - DE ♦ commented ·

What is your system voltage?

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rikesh avatar image rikesh Matthias Lange - DE ♦ commented ·

48 v system

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klim8skeptic avatar image klim8skeptic ♦ rikesh commented ·

Series stacking of your panels gets expensive quickly ...

Parallels pairs on a cheaper mppt's comes up cheaper when array series fusing is not required.

Extra mppt's to monitor is a headache though...

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Vance Mitchell avatar image Vance Mitchell commented ·

'4 x 100/20 48V Smart solar charger controller' should work ok on a 48v system.

Another option if you haven't purchased your controllers yet would be one of the new RS controller . That would allow for alternative wiring options such as 2 strings of 4 in series to reduce cable losses.

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