supply of 04 sq.mm. black colour electron beam04 sq.mm. black colour electron beam,04 sq.mm. black colour electron beam irradiation curing process thin walled flexible elastomeric c able with copper conductors suitable for rolling stock application conforming to rdso specification no. elrs/sp ec/elc/0019 , rev.3 , 1.8 kv grade colour black, rdso approved make. (accepted latest revision of specific ation i.e. elrs/spec/0019, rev.4). 1. cable shall be supplied in coils of 500 meter length and left over quantity i n multiples of 100 meter with a tolerance of plus/minus 5% on the length. 2.- cable should be marked in every on e meter length. as per drg.no. rdso specification no. elrs/spec/elc/0019 , rev.3 specn: rdso specificati on no. elrs/spec/elc/0019 , rev.3 [ warranty period: 30 months after the date of delivery ] => limited