Hello,
It is the collective experience of the Technical Committee on Electrical Safety in the Workplace that normal operation of enclosed electrical equipment, operating at 600 volts or less, that has been properly installed and maintained by qualified persons is not likely to expose the employee to an electrical hazard.This implies, but doesn't state, that MV equipment does expose the employee to an electrical hazard, and therefore PPE (shock and arc flash) would have to be worn even to operate a disconnect switch with the doors closed.
Please help.
I didn't find the right solution from the Internet.
References:-
https://brainfiller.com/arcflashforum/viewtopic.php?f=5&t=4116&view=next
Thanks