Where can an ATO be located?

An Automatic Transfer Switch (ATO) can be located on a feeder or in a substation because these environments are integral parts of the electrical distribution system. In substations, ATOs are used to manage the transfer of power from one source to another seamlessly, ensuring a reliable supply and minimizing downtime. On feeders, ATOs play a crucial role in maintaining the efficiency of power distribution, helping to redirect or switch power in response to outages or maintenance needs.

The other options do not accurately reflect the typical locations for ATOs. Residential areas may not have the infrastructure to support an ATO, power generation sites focus on production rather than distribution, and while underground facilities may house various electrical equipment, they are not the primary location for ATOs compared to feeders and substations. Therefore, the most appropriate setting for an ATO is on a feeder or in a substation, where it can effectively serve its purpose in managing power flow.