Volume-IF - JantERmantER

DCPL-K9A01
3.10.5 All avialion fixtures and accessories shaa be weatherproof, outdoor type
capable of withstanding highly humid and flue-laden almO$phere and generally
conforming to degree of protection IPW-55.
3.10.6 Obstruction lighting system shaU be operated by the Contractor for not less
lhan 60 days. Equipment and work which fails during the test period shall be
repaired or replaced. System performance win be considered satisfactory when
the obstruction rtghting system has operated continuously for a period of at
least sixty (60) days.
3.11.0 Temporary Obstrud:lon lighting
3.11.1 Temporary obstruction lighting shall be provided by the Contractor during
construdlon. Obstruction lights shan be provided at the uppermost part of the
stack or the SUtTOUnding scaffolding as constructiOn proceeds upwants. As
such level spedfied to have permanent obstruction fights Is passed, that level
shall be provided with temporary lighting: For. Temporary obstruction l.ighting.
fixture as per G!§C catalogue "2A750 (l) neon" shaD be used.
3.11.2 Power for operation. of the temporary obstruCtion right shall be obtaineti from
the Construction Power System. Supply circuit for these lights shall be
furnished. installed and maintained by the Contractor.
3.11.3 The temporary ob$Iruction Dghting system shall be operated & maintained by
the Contractor from Sun set to Sun rise. tnl pennanent obstruction Lighting
system is Installed and commissioned.
( 3.11.4 Contractor shall supply six (6) nos. lighting fixtures simftar to the type used by
him for Temporary Obstruction Lighting for Client's use in the event of outage,
if any, of Pennanent Obstruction' lighting fIXtures.
(
3.12.0 Wiring
( 3.12.1 Wires for lightirlg system shaH be PVC insulated. 650 V Ilrade.
l:·"
(.
3.12.2 WIIl!S shall be run in GI conduits suitable for outdOOr installation., Maximum
conduit fill shall be asfollOW$ :
Cable Size
Conduit Size
20 rom 25 mm 32 mm 40 mm 50 Ill'"
If
a) 2.5 Sq. mm Cu 3 5 9
ti
1;', '
...:r
(;
• e
b) 10.0 Sq. mm AI 2 5 7 8
Maximum no. of COJIductors admissible for
conduit
Suitable pull boxes shall be provided at convenient locations.
(PCA.CD.Q03.StlO5CSA24.doc.doc) V.II-D2IS-XXIV: 31
, 339