2702.2.20 Occupancy Groups B, E and R-1

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

1. 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.

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) per floor or 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 917;

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; and

3. At least three elevators in a building at one time with manual transfer to other elevators as required by Section 3003.

4. Power and lighting for the fire command center required by Section 403.4.5.