... core cables is only used for D.C.system. As for A.C.system,non-magnetic armored material should be applied 4 ... cross-sectional areas:1.5 mm2 , 2.5 mm2 ,4 mm2 , 6 mm2 , 10 mm2 , 16 mm2 ,25 mm2 , 35 ... of the cable diameter ,the bending radius of multi-core cable should not be less than 15 times of the cable diameter PVC Insulated Power Cable