Magnet Wire
Magnet Wire is copper wire which has been coated with a thin layer of insulating material .This means that when it is put into coils the individual coils will not short-circuit one another when they have to touch each other. If you want to make an electrical contact with Magnet Wire it has to burn off the coating to expose the copper wire inside. Magnet Wire is used in the construction of transformers, inductors, motors, headphones, loudspeakers, hard drive head positioners, potentiometers, and electromagnets. It is not usually magnetic itself. The wire itself is most often fully annealed, electrolytically refined copper. Aluminium Magnet Wire is sometimes used for large transformers and motors. Due to its lower electrical conductivity, an aluminium wire must have 1.6 times the cross sectional area as a copper wire to achieve comparable DC resistance. Much Smaller wire in diameter usually has a round cross section. Thicker wire is often square or rectangular shaped but with corners to permit better use of available winding space. You can purchase this type of wire on line in specialist shops you can usually obtain advice to from such shops.