Polycab manufactures energy efficient class 5 wire with different insulation properties such as PVC, heat resistant flame retardant ("HRFR"), heat resistant ("HR") and high resistant-flame retardant low smoke ("HR-FRLS"). These are constructed from 0.5 to 1000 Sq.mm. in single core copper rods, and (2C - 61C) * (0.5 Sq.mm.- 4.0 Sq.mm.), (2C- 4C) * (6 Sq.mm.- 120 Sq.mm.) in multicore segment copper rods.