These requirements cover isolated power systems equipment rated
600 Vac or less, intended for installation and use in nonhazardous
areas in health care facilities in accordance with the requirements
in Article 517 of the National Electrical Code, NFPA 70, and in the
Standard for Health Care Facilities, NFPA 99.
These requirements cover isolated power centers, either
cord-connected or permanently wired, consisting of a distribution
panel that incorporates an isolation transformer, one or more
isolated ungrounded secondary circuits terminating in integrally
mounted grounding-type receptacles, a reference grounding bus bar,
and line isolation monitor. Isolated power centers may have
provision for connection of grounding conductors to remote
grounding jacks, the room bonding points, and patient equipment
grounding points. A permanently wired isolated power center may
also have provision for connection to remote receptacles or
These requirements cover convertible system units that
facilitate a temporary conversion of the power supply for a power
center from a grounded supply to an isolated supply.
These requirements cover isolated power panelboards that
incorporate the same features as permanently wired isolated power
centers except that:
a) They may be supplied from remote isolation transformers,
b) The secondary isolated circuits are intended to be connected
by conduit to remotely located receptacles.
These requirements cover wall modular units containing isolated
These requirements cover cord-connected isolated power centers,
and panels intended to supply x-ray equipment only.