517.19 Category 1 (Critical Care) Spaces
The electrical receptacles or the cover plates for the electrical receptacles supplied from the life safety and critical branches shall have a distinctive color or marking so as to be readily identifiable. [99:22.214.171.124.5(B)]
Exception No. 2: Category 1 (critical care) spaces served from two separate critical branch transfer switches shall not be required to have circuits from the normal system.
All nonlocking-type receptacles shall be listed hospital grade and so identified. The grounding terminal of each receptacle shall be connected to the reference grounding point by means of an insulated copper equipment grounding conductor.
Informational Note: Where there is no patient equipment grounding point, it is important that the distance between the reference grounding point and the patient care vicinity be as short as possible to minimize any potential differences.
- A grounding bushing and a continuous copper bonding jumper, sized in accordance with 250.122, with the bonding jumper connected to the junction enclosure or the ground bus of the panel
- Connection of feeder raceways or Type MC or MI cable to threaded hubs or bosses on terminating enclosures
- Other approved devices such as bonding-type locknuts or bushings. Standard locknuts shall not be used for bonding.
Exception: The audible and visual indicators of the line isolation monitor shall be permitted to be located at the nursing station for the area being served.
Informational Note: Although it is permitted to run the equipment grounding conductor outside of the conduit, it is safer to run it with the power conductors to provide better protection in case of a second ground fault.