Thin Walled Electron Beam Irradiation Curing Process/Chemical Curing Process Cable, Single Core With Copper Conductor, Size 300 Sq.Mm 3000 V To Rdso Specn.No.Elrs/Spec/Elc/0019 Rev.2 Of Feb.2011 The Requirement Of Working Voltage Upto And Including 1.8 Kv Rms To Earth And 3 Kv Rms Between Phases On Ac Circuit.