Tender For pvc insulated (heavy duty) electric cable 4 core x 25 sq. mm aluminium conductor conforming a s per is:1554 (part1):1988 latest, bis marked, pvc compound outer sheath- st-1, type of compound insulation- a, use of armoured - galvanised steel strip armoured, working voltage up to and including 1100 volts, constructi on of conductor - stranded, material of conductor- al, filler and inner sheath- thermoplasticmaterials, test certif icate of cable must be given at the time supply of material. [ warranty period: 30 months after the date of deli very ]