Double coating enamel on a copper wire means applying two layers of enamel coating on the wire. The first step is to determine the initial diameter of the copper wire, and then add the enamel coatings.

Assuming the starting copper wire is "width" mm in diameter, and you want to add two enamel coatings to it, each with a thickness of 2 mm, the final dimensions of the wire would be:
Initial copper wire diameter: width mm
First enamel coating: 2 mm thick
First enamel-coated wire diameter: width + 2 * 2 = width + 4 mm
Second enamel coating: 2 mm thick
Final enamel-coated wire diameter: (width + 4) + 2 * 2 = width + 8 mm

So, the final diameter of the double-coated enamel wire would be "width + 8" mm.

LP Industry can supply the max. width 25mm, thick is 10mm copper foil/ coil / strip.

Previous：Class C200 degrees Celsius Polyesterimide over-coated with polyamide imide copper wire flat winding
Next：Inverter duty class h insulation copper magnet wire