Is it an NEC requirement to connect a ground wire to metal doors/covers of junction boxes and cabinets? Without the ground wire, when the hinged doors are open there is no solid ground connection to the ground bar on the back panel.
Some here are saying it is necessary to run a ground wire only when pushbuttons & lights are mounted on the doors.
Since there is no source of power in the door (no indicator lights etc) there is no way for the door to become energized except thru the "can" (and that is bonded). I vote no ... and I have absolutely no NEC reference to support it.
Thanks for the info so far. Just to follow up a little, I'm not sure if the proper terminology would be bonded or grounded, but IF a live wire came into contact with the door, shouldn't it be solidly grounded (bonded).
It is commonplace to run ground wires to all of the columns of a building and they don't have anything electrical mounted on them either.
I have done my share of "Hoffman" enclosures and other control cabinets, even hinged JBs in Hazardous Locations. Although Hoffman includes a tooth washer to bond the back panel and enclosure together, I've never seen accessories included to bond the door. BTW, I would say that any connection would be a "bonding" jumper and its purpose would be to "ground" the door by establishing a solid connection between the 2 components