TCYY / VBV / VBV-KConstructionI - Conductor : Class 1 electrolytic solid copper (IEC 60228, DIN VDE 0295, EN 60228) , 2 - Insulation : solid polyethylene (IS EN 60708) 3 and/or PVC , 3- Stranding : In layers up to 10 pairs, 20 pairs to 100 pairs consist of stranding of 10 pair groups wrapped with po..