Motor used enamelled copper winding wire is a magnet wire for sale and enamel coated magnet wire, which has been electrolytically refined; the layer is made from tough polymer materials.  Copper is the standardly used conductor material for enameled wire with excellent conductivity and very good winding ability. 

Motor used enamelled coated copper winding wire
Enamelled copper wire specifications
Class: F & H
Voltage: 600/1100 
VInsulation: Enameled
Wire Gauge: >25
2UEW155 0.03mm Enamelled Copper Winding Wire 
polyurethane enamel coated wire for motors

Enameled winding wire is a film insulated copper (or aluminum) electrical conductor used in form of the coil winding in motors, transformers, generators and other electrical machine.

Difference Between Enameled Wire and Copper Wire
Enameled wire and copper wire are both types of electrical conductors, but they differ in terms of their insulation and applications. Here's a breakdown of the key differences between them:

Insulation:
Copper Wire: Copper wire refers to a solid or stranded wire made entirely of copper metal. It doesn't have any additional insulation layer around it.
Enameled Wire: Enameled wire, also known as magnet wire, is a copper wire coated with a thin layer of insulating enamel. This enamel insulation provides electrical isolation between the wire's conductive core and its surroundings.
Applications:

Copper Wire: Copper wire is used for various electrical applications where insulation is not a primary concern. It's commonly used for wiring household circuits, power transmission, grounding, and other applications where the wire will be placed within conduit or insulation.
Enameled Wire: Enameled wire is specifically designed for applications where electrical insulation is critical. It is often used in applications such as transformers, motors, generators, inductors, and other electromagnetic devices. The thin enamel insulation allows the wire to be wound tightly and compactly in coils, making it suitable for applications that require precise coil winding and space-saving designs.
Flexibility:

Copper Wire: Copper wire can be more flexible and easier to bend, making it suitable for applications that require frequent movement or manipulation.
Enameled Wire: The enamel insulation on enameled wire can make it slightly less flexible compared to bare copper wire. However, this reduced flexibility is often not a significant issue in applications where enameled wire is used, as it is usually wound into coils or fixed in place.
Heat Resistance:

Copper Wire: Copper wire itself has good thermal conductivity, but it lacks the heat resistance provided by the insulating enamel on enameled wire.
Enameled Wire: The enamel insulation on enameled wire adds a layer of heat resistance, allowing the wire to withstand higher temperatures without compromising its electrical properties. This makes it suitable for applications where the wire may be exposed to elevated temperatures.
 

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