360
Electrical Distribution
361
BASIC DESIGN
The electrical distribution subsystem will provide power to the hospital at
480Y277 volts and 208Y120 volts in both normal and essential distribution
networks. The latter includes emergency and critical distribution.
Distribution from the substation and the main risers will use busducts to
achieve the largest potential diversity of service. The main risers will
always be contained within the service bays. Horizontal distribution
through the service zone will generally use wireways, conduit and cable,
except in local heavy load areas where a busduct might again be used.
All equipment associated with a service module, such as transformers,
branch circuit panels, etc., will be placed in an electrical room in the
service bay. This room will also house equipment for the communications
systems, the distribution of which will generally follow a similar route to the
electrical subsystems. All distribution to the functional zone will be
downfed from the service zone. (See Figure 360-1.)
Main vertical and horizontal distribution components are considered
permanent. Branch distribution components and service bay equipment
are considered adaptable.
1 - 215
Previous Page
