How do I calculate a solar system for my trailer/caravan ?
Size of panel, charge regulator, battery etc,is there a formula ?? TIA
Well- it goes something like your volts times your amp draw should equal your watts.
Now as all the panels are rated in watts and all your appliances are rated in amps, you need to convert every thing to the same. Don't matter just the same-- either watts or amps.
Next add up all the appliances- the lights, the controller to the reefer, the control to the hot water. Separate out the stuff that runs all the time. Put in a little buffer for the stuff that runs a little (water pumps/ lights/vent blower)
Get a figure and double it, and your batteries will never go flat. If you come up with about 4 or 5 90 watt panels your getting close.
I supplement with an "AIR-X" wind generator. It's good for about 6 amps of charge, but seems to hold it's own. Sooner or later you will need to charge everything up. Just the law of averages.-"nothing works all the time".
solar panel setup and grid tie inverter in my caravan
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