BS 7870-3.50. LV and MV polymeric insulated cables for use by distribution and generation utilities - Part 3. Specification for distribution cables of rated voltage 0.6/1(1.2) kV - Section 3.50. XLPE insulated, copper wire waveform or helical concentric cables with solid aluminium conductors, having low emission of smoke and corrosive gases when affected by fire (Implementation of HD 603)