0034" Diameter, 200°C, Natural The high temperature properties of this wire make it suitable for severe thermal overload applications. The insulation is made from modified Polyester with a Polyamideimide overcoat, and protects the coiled wire from short-circuiting. Raw copper is drawn to meet specific size requirements based on the National Electrical Manufacturer's Association (NEMA) standards. Magnet Wire, Enameled Copper Wire, 40 AWG, 8 oz, 16608' Length, 0.