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obiwancanoli's avatar
obiwancanoli
Explorer
Apr 23, 2018

Replacing current 30A with MPPT controller - make sense?

Some of you have followed other posts of mine re: solar, and satellite, so hope this additional inquiry elicits similarly helpful info... If I knew then what I suspect now, I'd have had the Dealer ...
pianotuna's avatar
pianotuna
Nomad III
Apr 25, 2018
Hi Mex,

If the voltage at the end of the 70 feet was not too high for the controller I'd do it, just to save on wire costs.

#14 wire at 70 feet at 8.8 amps yields a voltage drop of 20% with 36 volts at the panel end, and 28.8 at the controller end.


MEXICOWANDERER wrote:
Not criticism if you please, a legit question...

How about if a pair of 18 volt OCV panels were located in the sun seventy feet distant placed in series?

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