Each building shall be equipped with an egress lighting system as required by the Pennsylvania Department of Labor and Industry or other applicable code(s).

Provide emergency lighting along the path of emergency egress, including the exterior of a building and ending at a public way.

All emergency egress lighting (which includes stairwell lights, exit lights, selected corridor lights), fire extinguisher identification lights where required, and elevator cab lights shall operate twenty-four (24) hours a day and shall be connected to the panel board as defined in NFPA70, Article 700, for life-safety.  UL924 transfer devices are permitted to be deployed for select egress paths, classrooms, and other identified spaces and will be evaluated for off control based on the deployment by Engineering Services Electrical Group. Luminaires may also be dimmed in lieu of off where installed as part of a central system with programming capabilities, with programming to ensure the illumination level does not fall below minimum code requirements.  Refer to the Pennsylvania State University Lighting Design & Commissioning Matrix for deployment of dimming emergency lighting.

Battery type emergency lighting is not allowed without prior approval from Engineering Services Electrical Group.  Exception: Battery type emergency lighting should be provided in all interior building spaces housing the service equipment (e.g. main electrical room), and spaces housing the life-safety/stand-by power source (generator), or inside an exterior walk-in enclosure where deployed. Inverter based systems shall not permit dimming control output where inverter systems are approved for use by Engineering Services Electrical Group. Where battery type emergency lighting is permitted, specify with self-diagnostics and discuss automated reporting and work order generation capabilities with Engineering Services Electrical Group.

Stairwells, lobbies, hallways and entrances shall have ample lighting to allow for night cleaning.  Wall mounted ADA compliant fixtures with integral occupancy sensors and dimming drivers shall be provided for step-dim operation.   Refer to 26 51 00 Interior Lighting for Luminaire Basis of Design.

Illuminate the corridor-side elevator landing sills to 10 fc maintained (minimum).  Do not switch any luminaire required for this purpose.

All lighting in the building main Electrical Room housing the main switchgear/switchboard lineup shall be connected to a normal/emergency source. Luminaries in this space shall be switched with select luminaries unswitched, operating 24×7.  Coordinate layout and switching with Engineering Services Electrical Group.

Emergency luminaires shall be securely (e.g. mechanically) mounted; luminaire systems that are modular, readily adjustable, or susceptible to location or aiming tampering are not acceptable as an emergency lighting source.

Provide emergency lighting with standard architectural / utilitarian, line-voltage easy-to-replace luminaire types; do not use specialty or decorative lighting to achieve emergency egress lighting levels.

Refer to the Lighting Survey requirements in 26 50 00 Lighting.

Central Emergency Lighting Systems

Emergency lighting shall be fed from the building’s emergency power distribution system, which typically is served by either the campus medium voltage emergency source or generator, in accordance with NFPA 70 Article 700. Where these sources are not reasonably available as determined by Engineering Services Electrical Group, a central emergency lighting (inverter) system may be used.

Where used, the central emergency lighting (inverter) system shall:

·         Provide emergency lighting for a minimum period of 90 minutes, handle surges during loss and recovery of the voltage, and deliver its full rated output to the designated lighting load.

·         Automatically disengage itself from the normal input line when it loses normal supply voltage, and switch to a self-contained battery-powered inverter with built-in protection when the output is shorted or overloaded. When normal line voltage resumes, automatically switch back to normal operation. Size the transfer switch for this function to handle 125 percent of full load. Provide the battery system with self-contained inverters with overload protection.

·         Use batteries that are maintenance-free for a period of not less than 10 years and have capacity to provide emergency lighting levels in accordance with IBC requirements.

·         Include visual indicators to indicate normal power, inverter power, and battery-charger operation, with low-voltage test switch to simulate power failure by interrupting the input line.

·         Be UL 924 listed.

·         Include self-testing and self-diagnostic functions that satisfy NFPA 101 requirements, including reporting failures by a status indicator.

·         Include computer-based system capable of providing a report of the history of tests and failures at all times, that satisfies the intent of NFPA 101.

·         Include isolated, potential free relay dry contacts (e.g. Form C, available via terminal strip), for PSU Facility Automation Services’ hardwired connection to monitor, at a minimum, the following:

o   On battery power

o   General alarm

o   Battery test fail