Applications -  Suitable for use in conduit and for fixed, protected installation.  Conductor -  Many thin strands of Electrolytic Copper are fine - drawn simultaneously for uniformity of Resistance, Dimension, and Flexibility. The drawn strands are twisted in high precision machines which imparts circularity to the conductor.  Insulation -  Specially formulated Lead free + Flame retardant PVC insulation is used. The FR [Flame Retardant] property retards the propagation of flame without compromising safety.