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

Exhaust Fan:
For ensuring open ventilation, appropriate numbers of exhausts fan (300 mm size)
shall have to be provided by the contractor to allow 12 (twelve) air changes per hour
inside the pump house. 50% spare capacity shall also be provided.
Switch & Switch Board :
Switch boards/boxes located in control room and office areas shall be flush mounted
type on brick wall with only the switch knob projecting outside.
Switch boards/boxes shall have conduit knock outs on the sides. Adequate provision
shall be made for ventilation of these boxes.
All switches for lights, fans and plug points shall be piano key type unless other wise
specified.
Lighting switches shall be minimum 6 A rating of the type specially designing for
A.C. circuit.
Maintenance Equipment :
For the maintenance of lighting fixtures within the plant buildings, the contractor
shall also supply two (2) nos. free standing adjustable aluminium ladder, adjustable
from 5m to 10 m.
Lighting Cables & Wires :
Lighting cables shall be heavy duty, 650/1100 volt grade, multicore stranded
Aluminimum conductor, HR, PVC insulated PVC inner sheath, single round G.I wire
amoured and over all PVC sheathed conforming to IS:1554. Cable size from Lighting
Panel to junction box shall be minimum 10 sq. mm.
Lighting wires shall be 650/1100 volt grade PVC insulated stranded conductor, single
core copper wire conforming to IS:694 and colour coded, wire size from junction box
to lighting fixture shall be minimum 2.5 sq. mm.
DTS : Detailed Tender Specification. Page 213