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- Provide an emergency system to supply power to egress and exit lighting.
- Supply the emergency system from two sources: the normal power source and the emergency power source. Provide automatic means for transferring between sources.
- Emergency Electrical System shall be sized for 0.1 watts per square foot based on the programmed facility size and 1-foot candle lighting levels or as required by the City of Chicago Building Code.
- Exit and emergency lights will be provided as required by the City of Chicago Fire Prevention Bureau. Per energy code all exit signs shall have a minimum source efficacy of 35 lm/W.
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- Individual Battery Packs and exit signs with integral batteries shall be used for all schools that require a System II emergency lighting system.
- New high schools shall be provided with an emergency generator.
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- Schools requiring a Type I emergency system and high schools shall implement a code allowed alternate power source.
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- When a generator is provided, the following shall be connected to the emergency power distribution system:
- Emergency and exit lighting
- Fire pump
- Elevator
- Sump pumps
- Fire Alarm System
- Intrusion Detection system
- MDF Room
- Any power sources, including charging stations, for medical equipment
- Connect the following in addition to the previous list where feasible:
- Phone systems
- Intercom systems
- Security/Safety Systems
- Energy management system workstation, web server and building controller(s)
- Natural Gas: If medium gas pressure (1/2 psig or more) is available (at the school or adjacent to the property line) then a gas fired generator shall be provided. The first option is to locate the generator indoors, however if no space is available or the cost of installing the generator indoors is excessive (more than locating the generator outdoors), then an outdoor generator shall be provided. If medium gas pressure is not available, then an outdoor diesel generator shall be provided. • Fire Pump Starter: The fire pump starter shall be a soft start type unit and the system controls shall be designed to prevent the generator from overloading.
- Fire Pump Starter: The fire pump starter shall be a soft start type unit and the system controls shall be designed to prevent the generator from overloading.
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- A battery inverter system may only be used at existing elementary schools where, by code, the only loads required to be provided with emergency power are emergency lighting, exit lighting, and the fire alarm system. Use of a battery inverter system must be approved by CPS prior to design.
- Inverter system must be UL924 listed.
- When a battery inverter system is provided, the following shall be connected to the emergency power distribution system:
- Emergency and exit lighting
- Fire Alarm System
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- Provide per State and Chicago Building Department Code requirements.
- The following areas shall have emergency illumination whether having natural illumination or not:
- Exits, paths of egress and exit access corridors
- Small and large assembly areas Locker rooms
- Student restrooms
- Main and other dedicated electrical rooms. Battery packs shall be provided in all generator rooms.
- Main mechanical room and other mechanical decks
- Emergency power equipment location.
- Administration and other building control areas
- Kitchen/student dining
- Interior instructional space without natural illumination
- Rooms with areas exceeding 1000 s.f.
- Level 1 science labs
- Exterior side of exterior exit doors
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- Shall match voltage and phase of normal electrical service. Step down transformer(s) must be provided for 120/208V, 3 Phase, 4 Wire loads. Provide distribution panel board branch disconnect and distribution panel board, automatic transfer switch, exit and emergency distribution system.
- Lighting and power service shall provide normal power to the automatic transfer switch.