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Solar Charging System

April Said:

solar system powering .65hp Airconditioner?

We Answered:

535W x 7 hours = 3745 watt hours (or 3.745kWh) a day

3745wh / 6 sun hours (amount of time total the panels will output their full rated potential. 6 is possible in the middle of summer depending on where you are) = 624W / .67 (system losses) = 931 Watts of panels needed. five 200W panels would do it.

3745wh / .9 (inverter inefficiencies) x 2 (never use more than half the power in a battery bank) / 24V battery bank = 346 amp hour 24V battery bank. eight 100ah 12V batteries would do it, 2 in series to make 24V, 4 parallel strings of them for 400aH.

931W / 24V = 38.79A from solar array x 1.25 safety factor = 50A minimum solar charge controller

535W air conditioner, but what is the surge when it turns on? That is the number you need to make sure your inverter can handle.

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