The insulation is made from modified Polyurethane with a polymide overcoat, and protects the coiled wire from short-circuiting.
Magnet Wire, Enameled Copper Wire, 33 AWG, 5 Lbs, 31760' Length, 0. Magnet wire is copper wire with a thin layer of insulation, and is used in a variety of applications including transformers, wound coils, motors, solenoids, and instruments.0077" Diameter,Natural Raw copper is drawn to meet specific size requirements based on the National Electrical Manufacturerâs Association (NEMA) standards.