LT Heavy Duty Cables - POLYCAB brand, XLPE  insulated LT heavy duty cables are as per IS-7098 (Part I) and are suitable for fixed installations. The Cables are suitable for use on AC single phase or three phase (earthed and unearthed) systems for rated voltage up to and including 1100 volts. These cables can be used on DC systems for rated voltage up to and including 1500 volts to earth.