I cannot find anything in NFPA 79 that covers my question. It was a standard of some sort through at least the late 80's. I am trying to find out when it was dropped and why. If safety regulations are written for electricians working on an open panel, it would seem to me that the door should...
Industrial Disconnects
The JIC (Joint Industrial Council) used to have a standard stating that the door on a disconnect had to be latched, if door was in closed position, before turning on disconnect. Where can I find information on when and why this is no longer a requirement? In most panels...
