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

Lighting Distribution Boards shall have provision of cable entry from bottom and,
panels shall have provision of cable entry from top and bottom, as required, with
removable gland plates. Necessary double compression type brass cable glands,
tinned copper/aluminium cable lugs are to be furnished.
Two ground terminals shall be provided on opposite sides of each Lighting
Distribution Board and Lighting Panel for connection to ground conductor.
Each MLDB and Lighting Panel shall be complete with designation and caution
notice plates fixed on front cover and a directory plate fixed on inside of the front
cover. This directory plate on the MLDB shall contain details of the Lighting Panels
being fed from it including their designation, location, loading etc. The directory
plate on the Lighting Panel shall contain details of the points to be controlled by
each circuit including the location of the point controlled, rating of the protective
units and loading of each circuit. The plates shall be of anodized aluminium with
inscriptions indelibly etched on it.
Bus bar shall be electrolytic grade hard drawn aluminium, colour coded for easy
identification and designed for a maximum temperature of 85°C. Minimum rating
of phase and neutral Bus Bars shall be 67% (approximately) of the total rating of
fuse ways. Above 32 A, neutral Bus Bars may be half the size of phase Bus Bars.
Board/Panel shall be fitted with phase barriers such that it is not readily possible for
personnel to touch the phase bus bars. Insulation barriers shall preferably be fitted
around the circuit breakers such that only the surface and the toggle of the circuit
breaker are available on the front. Incoming and outgoing circuits shall be
terminated in suitable terminal blocks.
Receptacles:
Receptacles shall be heavy duty, complete with individual plug. The conduit box of
the receptacle shall be provided with earthing screws with washer and nuts welded
on the surface for grounding with 16 SWG G.I. wire. Arrangement shall be
provided inside the conduit box for grounding of third pin.
Shrouded type plug shall be provided with corresponding matching arrangement at
sockets to prevent accidental contact with finger during plug insertion.
DTS : Detailed Tender Specification. Page 212