PACKAGE : I Bid Document VOLUME : II - Public Health Engineering

Fixtures shall be fully wired up to respective terminal blocks, suitable for loop-in and
loop-out connection of PVC wires of following sizes:
a) Lighting fixture : 2.5 mm 2 Copper
b) Flood Light fixture : 2x2.5 mm 2 Copper
Lamps:
General lighting service (GLS) lamps shall be with clear glass and screwed caps.
All fluorescent lamp shall be bi-pin rotary type and either cool daylight or white as
per annexure. Lamp holder shall be spring loaded, low contact resistance type and
shall have resistance to wear.
Mercury/Sodium vapour lamp shall be colour corrected type with screwed cap.
Lamps shall be suitable for use in position and capable of withstanding small
vibrations. Restrictions and special features, if any, shall be clearly indicated in the
bid.
Ballast:
Ballasts shall be heavy duty, low loss, polyester-filled type with copper winding.
Ballast for Mercury/Sodium vapour lamp shall be provided with suitable tappings to
set the voltage within range specified. Ballasts shall be free from hum. Ballasts,
which produce humming sound, shall be replaced, free of cost, by the Contractor. In
multi-lamp fixture, each lamp shall be provided with individual ballast. Ballast
windings shall have maximum operating temperature of 120 o C without rated
temperature rise marking.
Lighting Panel/Distribution Boards:
Lighting Distribution Boards/panels shall be totally enclosed metal clad type,
fabricated from rust proof sheet steel of 16 SWG and finished with anticorrosive
powder coated paint and suitable for fixing on walls/brackets.
Lighting Distribution Boards and Lighting Panels shall be so constructed as to
permit free access to the terminal connections and easy replacement of parts. Front
access doors shall have padlocking arrangements.
DTS : Detailed Tender Specification. Page 211