BVVB 2x1.5mm2 PVC Insulated Flat Twin Electric Cables meet to IEC 60227. BVVB Cable is structured with copper core PVC insulation jointed flexible wires. the first B means general wiring, double V means PVC insulation and sheath, the second B means flat surface. A BVVB Cable commonly consists of two flexible copper cores and PVC insulation as sheathing.