Single Core Thin Walled Electron Beam Irradiated Copper Cable Size 4 Sq Mm, Wit H Copper Conductor, Working Voltage Above 750V & Up To 1.8/3.0Kv, Suitable For Rolling Sto Ck Application, As Per Rdso Specification No Elrs/Spec/Elc/0019 (Rev-4) Of Feb- 2018. [ Warranty Period: 30 Months After The Date Of Delivery ] ]