Back up generators provide emergency power. There are some important differences between portable generators designed for residential and commercial use. Residential generators are usually used to provide emergency backup power for select appliances within a home and provide from 1,000 to 8,000 watts of power
Portable generators for commercial use are often used on a jobsite to run power tools when electricity isn’t available. These units tend to receive more use and generate between 3,000 and 17,500 watts of power.