No function other than those listed in 517.32(A) through 517.32(G) shall be connected to the life safety branch. The life safety branch of the emergency system shall supply power for the following lighting, receptacles, and equipment.
(A) Illumination of Means of Egress Illumination of means of egress, such as lighting required for corridors, passageways, stairways, and landings at exit doors, and all necessary ways of approach to exits. Switching arrangements to transfer patient corridor lighting in hospitals from general illumination circuits to night illumination circuits shall be permitted, provided only one of two circuits can be selected and both circuits cannot be extinguished at the same time.
FPN: See NFPA 101-2003, Life Safety Code, Sections 7.8 and 7.9.
(B) Exit Signs Exit signs and exit directional signs.
FPN: See NFPA 101-2003, Life Safety Code, Section 7.10.
(C) Alarm and Alerting Systems Alarm and alerting systems including the following:
(1) Fire alarms
FPN: See NFPA 101-2003, Life Safety Code, Section 9.6 and 18.3.4.
(2) Alarms required for systems used for the piping of nonflammable medical gases
FPN: See NFPA 99-2002, Standard for Health Care Facilities, 4.4.2.2.2.2(3).
(D) Communications Systems Hospital communications systems, where used for issuing instructions during emergency conditions.
(E) Generator Set Location Task illumination battery charger for emergency battery-powered lighting unit(s) and selected receptacles at the generator set location.
(F) Elevators Elevator cab lighting, control, communications, and signal systems.
(G) Automatic Doors Automatically operated doors used for building egress. [NFPA 99:4.4.2.2.2.2]
