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Chapter 27: Electrical
Section BC 2701: General
Section BC 2702: Emergency and Standby Power Systems
2702.1 Installation.
2702.1.1 Fuel supply.
2702.1.2 Stationary generators.
2702.1.2.1 Prohibited location.
2702.1.2.2 Enclosure.
2702.1.2.2.1 Generator room contents.
2702.1.2.3 Multiple generators.
2702.1.3 Capacity.
2702.1.4 Protection of fire pumps.
2702.1.5 Special inspection.
2702.1.6 Registration.
2702.1.7 Automatic transfer devices and power system feeders.
2702.1.7.1 Prohibited location.
2702.1.7.2 Enclosure.
2702.1.7.2.1 Automatic transfer device room.
2702.2 Where required.
2702.2.1 Group A occupancies.
2702.2.1.1 Prior code buildings.
2702.2.2 Smoke control systems.
2702.2.3 Exit signs.
2702.2.4 Means of egress illumination.
2702.2.5 Accessible means of egress elevators.
2702.2.6 Horizontal sliding doors.
2702.2.7 Semiconductor fabrication facilities.
2702.2.8 Membrane structures.
2702.2.9 Hazardous materials.
2702.2.10 Highly toxic and toxic materials.
2702.2.11 Organic peroxides.
2702.2.12 Pyrophoric materials.
2702.2.13 Covered and open mall buildings.
2702.2.14 High-rise buildings.
2702.2.15 Underground buildings.
2702.2.16 Group I-3 occupancies.
2702.2.17 Elevators.
2702.2.18 Airport traffic control towers.
2702.2.19 Smokeproof enclosures and pressurized elevator shafts.
2702.2.20 Occupancy Groups B, E and R-1.
2702.2.20.1 Equipment requiring emergency power system.
2702.2.20.2 Equipment requiring standby power system.
2702.2.21 Continuously operating HVAC systems.
2702.2.22 Gas detection systems.
2702.3 Maintenance.
2702.4 Required loads for optional standby power systems.
2702.4.1 Additional optional standby power systems.
2702.4.2 Compliance with NFPA 110 and UL 2200.
2702.4.3 Special inspection.
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2702.1.2.1 Prohibited location.
Emergency and standby power generators shall not be located in the same room as the main or primary electrical service equipment. Distribution associated with emergency and standby power systems shall not pass through the room containing the main or primary electrical service equipment.
2702.1.2.2 Enclosure.
Emergency and standby generators within a building shall be located within a dedicated room separated by not less than 2-hour fire barriers constructed in accordance with Section 707 or horizontal assemblies constructed in accordance with Section 712, or both.
2702.1.2.2.1 Generator room contents.
Equipment and fuel tanks located within the emergency generator room shall be limited to equipment and fuel tanks associated with the emergency and standby power systems. Piping within the room shall be limited to sprinkler piping.
   Exceptions:
      1.   Uninterrupted conduits not associated with the emergency and standby power system may pass through the emergency generator room.
      2.   Piping associated with generator cooling systems may be located within the emergency generator room.
2702.1.2.3 Multiple generators.
Multiple generators supplying emergency power system loads only, or supplying emergency power system equipment in combination with optional standby power loads as a common system may be located in the same room. Such generators may also share a common room, fuel supply and other common equipment and systems.
2702.1.3 Capacity.
The emergency and standby power systems shall have capacity and ratings that supply all equipment required to be operational at the same time.
2702.1.4 Protection of fire pumps.
Where electrically powered fire pumps are connected to the emergency power system, overcurrent protection and feeder conductors shall be provided in accordance with the New York City Electrical Code. Automatic transfer switches shall be located in the same room as the fire pump as an integral part of the pump controller.
2702.1.5 Special inspection.
The installation of a required emergency or standby power system shall be subject to special inspection in accordance with Section 1705.
2702.1.6 Registration.
Fuel-burning equipment for an emergency or standby power system shall be registered with the Department of Environmental Protection in accordance with the requirements of Section 24-109 of the Administrative Code.

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