What is the function of the automatic transfer switch (ATS) in relation to Panelboard XX1?

The function of the automatic transfer switch (ATS) is primarily to switch supply sources automatically between different power sources, such as between the utility grid and backup generators. This ensures that a consistent power supply is maintained to essential loads, like those connected to Panelboard XX1, particularly during a power outage or when there is a disruption in the primary power source. The ATS will detect a loss of power from the main source and then automatically engage the backup power source without the need for manual intervention, allowing for seamless operation of electrical systems.

In this context, while controlling voltage, monitoring amperage, and providing alerts for power failure are important functions in electrical systems, they do not specifically define the role of the ATS, which is fundamentally about ensuring an uninterrupted power supply by automatically switching the source of that power.