Resource
Technical documentation

What grades of insulation are available in enamelled copper wire for coil manufacturing?

Views :
Publication Date : 2025-06-05

 What grades of insulation are available in enamelled copper wire for coil manufacturing?

The insulation layer thicknesses and the corresponding electrical efficiencies are divided into degrees. Depending on the grade, there is a different ratio of copper cross-sectional area to total cross-sectional area. The insulation grades describe a minimum and a maximum value for the increase of the layer thickness. According to the common IEC 60317 standard, grade 1 has the thinnest and grade 3 the thickest insulation layer. However, wires with thinner or thicker insulation or reduced tolerances are also available on a customer-specific basis.

enamelled copper wire for coil

In many calculations, the enamel layer is not taken into account and the effective outer diameter is therefore calculated too tightly.


As shown in this table by the fine wire manufacturer Elektrisola, a 0.100 G1 wire with 0.1 mm copper and an insulation layer has an effective outer diameter of 0.108 mm to 0.117 mm.


Related Technical documentation
Read More >>
Copper Winding Wires Copper Winding Wires
06 .12.2025
Enameled Copper Wire Wholesale Supplier in China Shandong Huilong Magnet Wire.Enamelled copper win...
<strong>Flat Wire</strong> Flat Wire
06 .10.2025
Flat Wire,Flat wire production line is characterized by its rectangular cross-section and a smooth, ...
NEMA MW 1000 NEMA MW 1000
06 .09.2025
MW 1000 is approved as an American National Standard through the NEMA MW 1000 Consensus Body accredi...
What grades of insulation are What grades of insulation are
06 .09.2025
What grades of insulation are available in enamelled copper wire for coil manufacturing?As shown in...