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lawrosa's avatar
lawrosa
Explorer
Dec 18, 2017

Solar question. Two panels same 24v , Series/parallel math

OK. So I have these panels. 280 watt LG,s I currently use one with an ecoworth 20 amp mppt. Max volts is 50 volts for controller hence one panel.. I can get 17 amps or so out of it normally... T...
CA_Traveler's avatar
CA_Traveler
Explorer III
Dec 19, 2017
lawrosa,

Best to not depend on reverse polarity protection. Be sure the first connection is OK and use polarity plugs so that they can't be reversed in the future.

For Voc run the temp comp numbers for your panel. For example at 0F you have additional voltage of about 43C drop * Voc/C. You're likely OK.

Ditto for 275W panels.

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