The terms “single build,” “heavy build,” “plain enamel,” and “heavy formvar enamel” refer to different types of enamel coatings used on copper wire.
Single build enamel coating refers to a thin layer of enamel applied to the copper wire. It is a relatively low coating thickness, typically ranging from a few micrometers to tens of micrometers.
Heavy build enamel coatings offer increased electrical insulation properties and improved protection against mechanical stresses, such as impact and abrasion. They are suitable for applications requiring higher levels of insulation and durability.
Plain enamel coatings provide good electrical insulation and protection against moisture, chemicals, and abrasion, but they may have limitations in terms of thermal resistance and mechanical strength.
Heavy Formvar enamel coatings are characterized by their high thermal resistance, good mechanical strength, and excellent electrical insulation properties.
The insulation comes in various thicknesses based on the need of the product being wound. Single build is a standard, where as heavy build adds double the amount of insulation to further protect the wire from shorting out.
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