The capacity or size of appliances you can power with the solar generator is determined by the capacity of the generator. Some generators are meant to power medium to large appliances, but low-capacity generators can only power devices with a low wattage draw. As a general rule, the connected devices should not draw more than the indicated maximum output of the generator. A 100W-generator can only power devices that draw less than 100W. A higher-capacity solar generator, say a 500W-model, can power devices drawing as much as 400W or more, but won’t power devices with a draw that exceeds 500W. Solar generators hardly exceed the 1500W capacity, which disqualifies them from powering the really large appliances.