A generator is a device for converting chemical, mechanical, or some other type of energy, into electrical power. Electromagnetic generators are the main source of electricity in the world today. They may be driven by steam turbines, water turbines, wind turbines, internal combustion engines, or a moving part of some other type of machine. A generator is the reverse of an electric motor, which uses electricity to produce another form of energy. In the case of solar technology, a solar module, or a system of solar modules, is considered to be a generator.

 

Generators are rated by watts (W). To determine which size generator is right for your needs following these steps:

 

Find amperage and voltage information for each appliance or tool being used

Multiply the volts (V) by the amps (A) to determine the watts you'll need

Choose a generator that meets or exceeds your total wattage requirement

Sample tool and wattage guide
Light bulb	100W
Fan	200W
Color TV 20"	400W
Deep freezer	500W
Computer 15" monitor	800W
Refrigerator/freezer 18 cu.ft.	800W
Sump pump	1000W
Water well pump 1/2 HP	1400W
Space heater	1800W
Electric water heater	4000W