PE: It means Polyethylene, it’s a thermoplastic polymer commonly used as insulation due to his easy manufacturing and good dielectric properties. It is also used as outer sheath in outdoor and protected underground installation. PVC: Thermoplastic material with properties that are widely variable by the use of additives. All-purpose jacket material for applications with no special demands. It means Polyvinyl chloride, a plastic polymer normally used for the single conductors or for outer sheaths insulation. Its temperature range is -15/+70°C. OFC: It means Oxygen Free Copper, 99% pure. This feature considerably improves the electrical conductivity.