Emergency and standby power shall be required in those Group B, E and R-1 occupancies specified in this section:
- Group B occupancies with occupied floor less than 75 feet (22 860 mm) above the lowest fire department vehicle access having a gross floor area over 15,000 square feet (1393.6 m2) per floor or a total gross floor area of 100,000 square feet (9290.3 m2) or more.
- Group E occupancies with occupied floor less than 75 feet (22 860 mm) above the lowest level of Fire Department vehicle access having a gross floor area over 15,000 square feet (1393.6 m2) per floor or a total gross floor area of 100,000 square feet (9290.3 m2) or more.
- All Group R-1 occupancies.
With respect to such Occupancy Groups B, E and R-1, the following equipment, where such equipment is required by this code, shall be provided with an emergency power system:
- Exit signs and means of egress illumination required by Chapter 10;
- Elevator car lighting;
- Emergency voice/alarm communications systems, including Fire Department in-building Auxiliary Radio Communication systems (ARCs) provided where required or installed voluntarily in accordance with Section 917;
- Automatic fire detection systems;
- Fire alarm systems; and
- Electrically powered fire pumps, including manual fire pumps, automatic fire pumps and sprinkler booster pumps.
With respect to such Occupancy Groups B, E and R-1, the following equipment, where such equipment is required by this code, shall be provided with a standby power system:
- Ventilating systems used for smoke venting or control;
- Stair pressurization; and
- At least three elevators in a building at one time with manual transfer to other elevators as required by Section 3003.
- Power and lighting for the fire command center required by Section 403.4.5.