Not all solar panels are the same.
How big of a solar panel to run a fan.
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Polycrystalline solar panel s to power fan led light directly during daytime.
Most solar powered fans include a cord that s at least six feet long but a few have cords of 15 feet or more which should be enough to cover even the largest rooms.
The following table shows the sample power load for the california cabin.
Solar powered fans are still relatively rare.
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Then use a 12 to 24 volt dc fan.
Depending on the type of cord your fan uses you may be able to replace it with a longer one from a home improvement store if need be.
From memory they use roughly 33 watts so you should be able to run three directly off that 120 watt panel i suggested with a little head room to spare.
The power output size.
They dont care if the voltage goes from 12 to 24 vdc or more it will run fine the rpm will change as the voltage fluxtuates but thats no big deal.
Those solar panels used for residential purposes range from 150 watts to 370 watts per panel depending on the panel size efficiency and cell technology.
50 watt 100 watt and 160 watt.