... , IEC Standard 4, 25 years Experience 0.6/1KV PVC Insulated Power Cable 1, Standard: GB/T12706/IEC60502 or ... Single core, 2 cores, 3 cores, 4 cores, 5 cores, 3+1 cores, 3+2 cores, 4+1 ... follows: Single core: 20(d+D) 5% three cores: 15(d+D) 5% (D is actual diameter of cable; ... Customized function: we can also add special functions to the Cables, such as: Flame-retardant, Fire-resistant , XLPE Insulation ...