An automatic transfer switch (ATS) is a “smart” switch that is used to sense when utility power has been lost. When the ATS detects a power outage, within seconds, will automatically transfer the power source from the lost utility power, to start and use the home generator for power. Once the main utility power is restored, the ATS will again detect the main power source is back on, then automatically switch back to utility power and turn off the generator.
A manual transfer switch eliminates the need for extension cords by allowing you to prewire up to 16 circuits. Simply start the generator, plug it in, and flip a switch to lock out the utility and transfer the load to the generator.