There is a lot of remote equipment that can't be remotely powered on or reconfigured after a full shutdown. Imagine a Y junction switch that can take switch be

There is a lot of remote equipment that can't be remotely powered on or reconfigured after a full shutdown. Imagine a Y junction switch that can take switch between the power from 2 plants into a local city grid. The switch's control circuits might only having a power supply on the side of one plant. (Dumb cost saving measure, which I heard is falling out of practice.)