IS any body help to clarify below,
We are using an IT system with IMD in a 480v 60hz Motor control Center , which is feeding 15 motor circuits.
1. when a fault occurs on a One feeder which will trip total MCC?
2.Is each maotor feeder required any RCD in IT system, or IMD will fuction thsi protection.
3.Is IMD will monitor each feeder or only main circuit.