When we install a generator, we connect it to your home through an automatic transfer switch, or ATS.
When the power goes out, the ATS will sense the loss of power and automatically disconnect the main utility lines leading into your home. It does this so that when power is restored, you won't have to worry about electricity from your generator damaging your home or feeding back into the main utility lines.
Whenever our generator systems detect loss of power, it will activate a 10 second "brown out" timer. If the power does not come back on after 10 seconds, the generator will assume that the power won't be coming back on any time soon and the unit will begin to warm up. Approximately 25 seconds later, the generator will fully activate and provide power to whatever circuits or appliances it is hooked into.