Group R-2 occupancies in buildings greater than 125 feet (38 100 mm) in height shall be required to provide a standby power system to support the following loads:
- Power and lighting for fire command center required by Section 403.4.5;
- Ventilation and automatic fire detection equipment for smokeproof enclosures;
- At least one elevator serving all floors, or one elevator per bank where different banks serve different portions of the building; and
- Stair pressurization systems when provided.