I am finishing up my AAS in Electromechanical Technology. I have a pretty good grasp on how 3 phase power works. But all of my classes so far only concentrate to installing or repairing a machine and hooking it up to a disconnect.
What is between the disconnect and the line into the building? When I used to work at a big printing plant there were 3 large transformers, supplied by the power Company. I am certain these supplied the 3 legs of power into the building, just inside where the lines came in was a Huge circuit breaker, I have since learned was a "Switch Gear.
Now what is between that switch gear and the disconnects that the equipment was hooked to?
I also noticed that around that particular plant you would see floor mounted transformers, I am assuming these were to step down 480 to voltages needed for 208, 240, 120 etc.
What is between the disconnect and the line into the building? When I used to work at a big printing plant there were 3 large transformers, supplied by the power Company. I am certain these supplied the 3 legs of power into the building, just inside where the lines came in was a Huge circuit breaker, I have since learned was a "Switch Gear.
Now what is between that switch gear and the disconnects that the equipment was hooked to?
I also noticed that around that particular plant you would see floor mounted transformers, I am assuming these were to step down 480 to voltages needed for 208, 240, 120 etc.