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Solar PV Guide
How to size a solar PV system
Just about everything you need size the solar panels and controllers for motorhomes, caravans, boats, electric fences, remote buildings and sheds, off gird homes and more can be found here.
As a very basic guide;
Electric fence 10 to 20 watts
Motorhomes, boats and caravans (topping up only) 20 watts +
Motorhomes, boats and caravans (useful domestic power) 80 watts + but preferably 120 to 150 watts
Shed or outbuildings (small number of low wattage LED lights) - 20 watts +
Small broadband repeater site - 200 watts+
Off grid home - 600 watts+