15.9 INSTRUMENTS AND CONTROL CABLES
15.9.1 All interconnecting cabling required for C&I systems/equipment, inter-panel cabling, power supply cabling etc.) shall be included in the scope of this specification. The cables supplied shall include but not be limited to the following :
i) Control cables (1.1 kV, multi-core, 1.5 sq. mm) stranded copper conductor, PVC insulated, steel wire armoured and PVC sheathed, flame retardant low smoke.
ii) Instrumentation cables
iii) Pre-fabricated cables
iv) All special cables i.e. screened, twisted pair co-axial, heat resistant, etc. required for C&I system.
v) Power supply cables. These shall be Red, Yellow, Blue, Black coloured for three phase with neutral system. For DC these shall be coloured Red & Black.
vi) Compensation cable for Thermocouples.
vii) Any other required for C&I systems not specifically brought out above.
15.9.2 Laying, termination and ferruling of all cables covered in this specification shall be included in the tenderer’s scope. Requisite wiring schedules and cable schedules shall be prepared by the successful bidder and shall be subject to approval by purchaser. All cables shall be terminated with proper lugs. At external terminals inside the panel, there should be sufficient space so as to ensure easy replacement and fixation of external cables.
15.9.3 The cables in hot zone shall be fire and heat resistant type and be laid in insulated heat proof conduits upto junction boxes located far away from hot zone.
15.9. 4 Special earthing requirements of the system, earthing details etc. should be brought out by the bidder for the equipment being supplied. All earthing shall be done with green coloured leads to have proper distinction. Two copper earth bases of 75×5 mm should be provided in each panel.
15.9.5 The philosophy of termination of various type of filed instruments/designs shall be submitted in advance for the approval of the owner.
