Transformers rectangular enameled aluminium wire has a high heat and freon resistance and very good resistance to transformer oils and typical solvents. Enameled rectangular aluminum wire is made of oxygen free rod or electrical aluminum rod by a certain size of the die drawing or extrusion of the wire, the insulation paint.

Enameled Aluminium Flat Wire - Aluminum Foil Strip
Temp Class( C): 120, 130, 155, 180, 200, 220, 240 
Conductor: Aluminum

Magnet wire or enameled wire is a aluminium (Al) wire coated with a very thin layer of insulation. It is used in the construction of transformers, inductors, motors, generators, speakers, hard disk head actuators, electromagnets, electric guitar pickups and other applications that require tight coils of insulated wire.

What type of wire is used in Transformers?
The wire itself is most often fully annealed, electrolytically refined copper. Aluminium magnet wire is sometimes used for large transformers and motors. The insulation is typically made of tough polymer film materials rather than vitreous enamel, as the name might suggest.

What is the difference between copper and aluminum Transformers?Transformers wound with aluminum produce more noise during operation than those wound with copper, which can lead to worse working conditions for system operators. While copper wiring is heavier than aluminum wiring, it is often used to make smaller and lighter transformers.

What are transformer windings made of?
Transformer windings are normally made from copper but aluminium is a suitable competitor where weight and first cost are decisive factors. In North America, aluminium is the predominant choice of winding material for low-voltage, dry-type transformers larger than 15 kilovolt-amperes (kVA).

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