YY control cable is a highly flexible unshielded multicore power and signal control a href="/web/c/cables-wires/" target="_self"cable/a able to support a range of applications including engineering, plant installations, car production, bottling plants and many more. It is made up of plain electrolytic fine copper wire strands with PVC-based insulation. Suitable for outdoor use when protected from direct sunlight and indoors in dry or moist conditions.strongTypes of YY CAble/strongAvailable in a wide range of core configurations and cross-sectional area (CSA) sizes, with individual cores of green/yellow and varying numbered black cores. YY control cables are not suitable for fixed wiring applications requiring compliance with the requirements set out in BS7671.