1. Cu/Al/XLPE/SWA/PVC sheath Electric power cable For laying buildings,inducts , kin tunnels,direct in ... mm2,muli-core cable from 1.5 mm2 to 400 mm2 4.operating characteristics: Rated power-frequency voltage u0/ ... below 0 The bending radius of single core cable should not be less than 20 times of the ... cable diameter ,the bending radius of multi-core cable should not be less than ...