THHN wire has good heat resistance, stable operation at high temperatures and improve the instantaneous thermal overload resistance of the wire. It can reduce the escape or migration of the PVC jacket. THHN wire has better electrical and physical properties than PVC jacket wire, more lightweight and it can improve the safety and applicability in wiring. It can work in both wet and dry environments. The conductor made by strands of copper wire which is flexible than single copper. And 100% pure bare copper can reduce the impact of oxidation on the conductor to extending the service life of the product. PA6 nylon +PVC sheath gets corrosion resistance, self-lubricating and oil resistance. Compared with PVC insulated wire of the same section, it has the advantages of small outer diameter, light weight, small static friction coefficient and corrosion resistance. THHN wire has high flame retardant, the maximum voltage up to 600V, the working temperature up to 90℃, it is often used in residential, CNC, ground wire, lighting, household appliances, automotive. 1