This part of IEC 60317 specifies the requirements of enamelled round copper winding wire of class 240 with a single coating of polyamide-imide resin. The range of nominal conductor diameters covered by this part of IEC 60317 is: grade 1:0,180 mm up to and including 1,600 mm; grade 2:0,180 mm up to and including 1,600 mm. The nominal conductor diameters are specified in Clause 4 of IEC 60317-0-1:2013.