2702.2.20 Occupancy Groups B, E and R-1

Emergency and standby power shall be required throughout those Group B, E and R-1 occupancies specified throughout this section:

1. Group B 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) on each floor, or having a total gross floor area of 100,000 square feet (9290.3 m2 ) or more.
2. 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) on each floor, or having a total gross floor area of 100,000 square feet (9290.3 m²) or more.
3. 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:

1. Exit signs and means of egress illumination required by Chapter 10;
2. Elevator car lighting;
3. 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 916;
4. Automatic fire detection systems;
5. Fire alarm systems; and
6. 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:

1. Ventilating systems used for smoke venting or control;
2. Stair pressurization;
3. At least three elevators in a building at one time with manual transfer to other elevators as required by Section 3003; and
4. Power and lighting for the fire command center required by Section 403.4.6.