PACKAGE : I Bid Document VOLUME : II - Public Health Engineering
PACKAGE : I Bid Document VOLUME : II - Public Health Engineering
PACKAGE : I Bid Document VOLUME : II - Public Health Engineering
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Each installation shall include the distribution board, wiring, light fittings, socket<br />
outlets, exhaust fan, earthing and external flood lighting etc. as required together with<br />
all conduits, trays and accessories as necessary to complete the whole of the<br />
installations.<br />
In general, fluorescent fittings and indoor ceiling mounted High Bay Lamp shall be<br />
used for internal lighting with weather proof fittings for exterior mounting on<br />
building structures above and adjacent to the door openings.<br />
External wall mounted luminaries shall be installed using a back entry conduit system<br />
terminating behind the respective fitting with an end box mounted on the building<br />
fabric. Appropriate neoprene seals shall be used to prevent ingress of moisture. The<br />
final connections of each fitting shall be sleeved with silicon glass over sleeving.<br />
Lighting fixtures, ceiling fans, Exhaust fan and flood lights shall generally be<br />
individually controlled from the lighting panel / switch boxes. How ever the out door<br />
tub light fixture may be group control through switch boxes where each switch may<br />
control maximum 3 nos. fluorescent fixtures. For area illuminated by more then one<br />
circuit, the adjacent circuits shall be fed from different phases.<br />
19.33 Emergency D.C. lighting.<br />
In case of a total power blackout, emergency lights with rechargeable battery back up<br />
installed at strategic locations, shall give nominal illumination for safe movement and<br />
essential function.<br />
The lamps shall be 11/18 W Tungsten Halogen operated by a sealed type lead acid<br />
battery. A solid state constant voltage charger shall be provided together with low<br />
voltage cutout protection to prevent from over discharge of the battery. The units<br />
shall be suitable for the environment in which they are to operate. The emergency<br />
lighting load shall comprise at least 10% of the normal lighting load. The exact<br />
location and distribution of the fixtures shall, however, be finalized during detailed<br />
engineering stage.<br />
The power for emergency D.C. lights shall be arranged by the contractor from the<br />
plant source.<br />
DTS : Detailed Tender Specification. Page 209
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