4 ESSENTIAL ELECTRICAL POWER SYSTEMS
4.1 SCOPE
This article covers the Essential Electrical Systems required for
hospitals, ambulatory care centers, clinics, medical and dental
offices, nursing home care units, limited care facilities, animal
research facilities, and the emergency systems required for fire pumps
and boiler plants, energy plants and fire stations. Refer to Article
2.16 (Emergency Power for HVAC Equipment), HVAC Design Manual for
additional information.
4.2 BMEP STANDARDS
Engineer shall size emergency generators based on Brake Mean Effective
Pressure (BMEP) standards. Refer to specifications Section 16208,
Diesel Generators, for BMEP values that should be used for sizing.
4.3 CODES AND STANDARDS
The Essential Electrical Systems for health care facilities shall
comply with the applicable portions of the National Fire Protection
Association's (NFPA) publications listed in Article 1.5, "Applicable
Codes and Standards" section of this document. To provide for effective
facility operations during interruption of normal electrical service,
additional functions and items are listed which shall be connected to
the essential electrical system.
4.4 EXISTING FACILITIES
Variations in wiring arrangements in existing facilities are acceptable
if an equivalent degree of performance and reliability is not
compromised. Such variations may particularly occur with certain wiring
in separate or common raceways, with certain functions connected to one
or another system or branch, or with certain provisions for
automatically or manually delayed restoration of power from the
alternate (emergency) source of power.
NOTE: All items, except those, which are designated as "above code"
requirements, are listed in NFPA documents.
4.5 DEFINITIONS
4.5.1 ILLUMINATION OF MEANS OF EGRESS
Lighting from selected fixtures in corridors, stairways, lobbies,
courts, above ramps, etc., which illuminate the pathways to exits, the
exits and the ways of discharge be illuminated.
4.5.2 PBPU
Prefabricated Bedside Patient Unit
4-1
ELECTRICAL DESIGN MANUAL
EMERGENCY ELECTRICAL POWER SYSTEMS
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