EIW Class 180 Q(ZY/XY) Polyesterimide Nylon Composite Enameled Copper Round Wire
The preferred size of the nominal diameter of the conductor diameter conductor shall comply with the R20 number system in GB/T321-2005. The actual values and their tolerances are shown in Tables 1 and 2.
When required for technical reasons, the intermediate size of the nominal diameter of the conductor selected by the user shall comply with the R40 number system in GB/T321-2005. See Appendix A for actual values and their tolerances.