This part of IEC 60352 is applicable to spring clamp connections made with stripped wire without further preparation: – solid conductors of 0,32 mm to 3,7 mm nominal diameter (0,08 mm2 to 10 mm2 cross‑section), or – stranded conductors of 0,08 mm2 to 10 mm2 cross-section, or – flexible conductors of 0,08 mm2 to 10 mm2 cross-section, according to IEC 60228 or IEC 60189-3 for use in electrical and electronic equipment and components.