BS EN 60317-20. Specifications for particular types of winding wires. Part 20. Solderable polyurethane enamelled round copper wire, class 155 Wires, Electric wires, Electric conductors, Windings, Electrical components, Coated materials, Enamelled wires, Copper, Circular shape, Insulated wires, Wear resistance, Abrasion, Grades (quality), Performance, Diameter, Polyurethane, Solderability testing, Testing conditions, Temperature, Thermal-shock resistance