on vidio ATS connection for multi story residential building

Automatic transfer switch ATS forms the interface between the gen set utility power and the consuming electrical equipment it performs three functions it monitors power sources for failure it transfers load from one power source to another.
what is electrical changeover
A changeover switch switches a house electricity supply from the general grid power supply to a generator system in case of power outage the changeover switch connects to the main power grid generator or alternate source and the house wiring.

Automatic transfer switch ATS forms the interface between the gen set utility power and the consuming electrical equipment it performs three functions it monitors power sources for failure it transfers load from one power source to another.
what is electrical changeover
A changeover switch switches a house electricity supply from the general grid power supply to a generator system in case of power outage the changeover switch connects to the main power grid generator or alternate source and the house wiring.