In most applications, the Mitsubishi generator will provide power to devices that use a total wattage rating up to the rated wattage output of the generator. For example, to power ten 100 watt lightbulbs, the generator rated wattage output would need to be 1000 watts. In order to operate an appliance that has an electrical motor, such as a freezer, saw or drill, you must calculate the wattage required to start the motor. The rule of thumb is to multiply the wattage requirements by three. For example, if you want to run a drill with a rated wattage requirement of 300 watts you must multiply by three to get the 900 watt requirement to start the electric motor.