supply of 1.5 sq.mm, chocolate colour, electron beam irradiation curing process thin walled flexible elastomeric cable with copper conductor suitable for rolling stock application conforming to rdso spec.no.elrs / spec / elc / oo19, rev.4, feb- 2018, 1.8 kv grade. note: 1.electron beam irradiated cross linked cables are only acceptable. 2.firms are requested to indicate conformance of the same in the offer. 3. cablesshall be supplied in coils of 500 metreslength and left over quantity in multiples of 100 meters with a tolerance of + / -5% on the length. [ warranty period: 30 months after the date of delivery ]