FR PVC (Flame Retardant (FR) PVC Insulated Industrial Single & Multi Core Flexible Cables) compound Insulated Industrial Single Core and Multi Core Flexible Cables have a wide range of application in machine tools, appliances, control panels, machinery and industries of every nature. The conductors, drawn from 99.97% bright electrolytic grade copper with more than 100% conductivity, are annealed and bunched together. The conductors are insulated with a FR PVC compound with high insulation resistance and dielectric strength, formulated and manufactured in house.