Enamelled Resistance Wire is used in motors, transformers, generators, and electrical measuring devices, wire enamels are coated. Heat is used to cure them onto the wires. The main purpose of the resultant coating is to provide electrical insulation. Primary insulation is another term for wire enamels. Enamelled Resistance Wire, is a very adaptable material used mostly in electrical transference applications such as transformers, inductors, motors, electromagnets, and other tight coil applications. This wire is very effective to use.