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.
5 Lbs, 10135' Length, 0..Magnet Wire, Enameled Copper Wire, 31 AWG, 2.0095" Diameter, Red The insulation is made from modified Polyurethane with a polymide overcoat, and protects the coiled wire from short-circuiting.