1990HD 21.3 S2-1990 Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V; part 3: single core non-sheathed cables for fixed wiring
1983HD 21.3 S2-1983 Polyvinyl Chloride Insulated Cables of Rated Voltages up to and Including 450/750 V - Part 3: Non Sheathed Cables for Fixed Wiring