Structure Conductor: Annealed copper, Group 5 (flexible) according to IEC Standard 60228 or ISIRI 3084. Insulation: PVC blend of type D/PV. Arrangement of Strands: • Round Cable: The strands are twisted together. • Flat Cable: The strands are arranged in parallel. Sheath: PVC blend of type ST5/PVC, and the sheath color is typically black or white. Standards: • IEC 60227 or ISIRI 607 with a nominal voltage of 300/300 volts.