6.13.2 DENTAL EXAM LIGHT SWITCHING
Install a wall switch located away from the regular light switches at
the door, preferably on a side wall convenient to the dentist or
assistant. Include a pilot light with the switch to indicate an active
service.
6.14 EYE EXAMINATION ROOMS
Provide fluorescent lighting fixtures with dimming ballasts and the
following controls in each Eye Exam Room in the Eye Clinic:
(a) One 3-way switch at the strike side of the entrance door.
(b) One 3-way dimmer switch on the side wall near the expected location
of the projection screen.
(c) One 4-way floor switch, foot operated, with approved rubber-
insulated cable--approximately the diagonal length of the room exposed
on floor. Extend this switch from a recessed junction box mounted 150
mm (6 inches) above the finished floor to clear the vinyl-base molding.
6.15 HEMODIALYSIS EXAM
In addition to a fluorescent fixture (two-level switch) over each
patient lounge bed, provide a 250 W (watt) quartz down light over both
sides of the lounge bed. Control by a single dimmer control at the bed
wall.
6.16 INTERSTITIAL SPACES
(a) Install lighting by fluorescent strip lights equipped with wire
guards.
(b) Spaces with walkways or catwalks only:
(1) Locate fixtures appropriately along catwalks and walkways.
(2) Select a few appropriate fixtures to be on an un-switched emergency
circuit.
(3) Switch all non-emergency powered fixtures from all access doors to
the space. Long catwalk runs should be separately switched.
(c) Spaces with "walk-on" floors:
(1) Provide general lighting to avoid piping, ductwork and equipment,
with emphasis at walkways.
(2) Select a few appropriate fixtures to be on an un-switched emergency
circuit.
(3) Switch all non-emergency powered fixtures locally by bays (or
groups) and at each access door. Walkway lights should be switched at
all related access doors. Use low-voltage remote control switching to
ELECTRICAL DESIGN MANUAL
6-8
LIGHTING
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