Page Comparison

.01  (Emergency and Standby) Power Systems

1. Emergency (Level 1,Type 10 by NFPA 110 power source at the University Park Campus should typically be the campus “emergency” cable (4160Y/2400V).  Coordinate availability with Engineering Services.
2. Where the emergency cable system is not available, an engine driven generator shall be evaluated in design.  Emergency system distribution voltage should be 480Y/277V or 208Y/120V for three phase installations (greater than 50 KVA) and  single phase for installations (less than 50 KVA).  For further requirements, refer to 26 32 13 Engine Generators. 
3. Wiring from each branch of the power systems shall be kept separate from each other and the normal power system.
4. Equipment serving the emergency branch shall be installed in rated rooms separate from normal power equipment rooms.
5. Review alternate power sources for elevators and fire pumps early in project design. Project size, program,building occupancy types,and project site location factor into application of IBC and NFPA requirements and alternate power source(s).
   1. For instance, it is typical for elevators in low-rise buildings at University Park (UP) campus to be classified as Legally Required, with one source as a tap ahead of the main.
   2. Note that NFPA 20 designation of reliable power is commonly applied at UP core campus. This factors into power source configuration for fire pumps.

.02 Life Safety Power

1. The Life Safety (NEC 700, code required emergency systems) power source at the University Park Campus shall be the campus “emergency” cable system (4160Y/2400V) wherever possible.  Coordinate availability with Engineering Services Electrical Group.
2. When provided by the University,“emergency” cable, installation shall include the following componets:
1. Primary fused disconnect switch with current limiting fuses and lighting arrester
2. Dry type, high-efficiency transformer
3. Secondary overcurrent protection
4. Transfer switch
5. Integral meter in ATS or provisions for power meter (meter provided by PSU).  Provisions shall match those as noted in Electricity Metering section.
3. Life Safety service Loads shall include, but not be limited to:
1. Egress lighting
2. Exit signage
3. Fire alarm system
4. Sprinkler equipment
5. Smoke detection system
6. Telephone equipment
7. Building Automation System infrastructure equipment

.03 Legally Required (formerly PSU Critical) Power

1. Installation only to occur when approved by Engineering Services.  The Legally Required Standby (NEC 701), power source at the University Park Campus shall utilize the campus “standby” cable system (4160Y/2400V), wherever possible.  Coordinate availability with Engineering Services.
2. When provided from the “standby” cable, installation shall include same components as the Life Safety Power system. 
3. Legally Required Standby Loads shall include, but not be limited to:
1. Elevator 
2. Animal rooms
3. Other loads as required by AHJ

.04  (Optional) Standby Power

1. The (optional) Standby Branch (NEC 702, non-required standby systems) power source at the University Park Campus shall utilize the campus “standby” cable system (4160Y/2400V) wherever possible.  Coordinate availability with Engineering Services. 
2. When provided from the “standby” cable, installation shall include same components as the Life Safety Power system.
3. Standby service loads shall include, but not be limited to:
1. Class 1 (irreplaceable) research loads shall be determined by each College.  Utilize dedicated breaker and single twist-lock receptacle per “Devices” section.  Coordinate these loads with the Engineering Services so that they can be numbered and tracked.