This Japanese Industrial Standard specifies the connecting devices as separate entities for the connection of two or more rigid conductors (solid or stranded) or flexible conductors (complying with JIS C 3664, IEC 60344 or relevant JISs), having a cross-sectional area of 0.2 square millimetre or over to and including 35 square millimetre with a rated voltage of 1 000 V or under a.c. at frequency of not exceeding 1 000 Hz, or of 1 500 V or under d.c. used for household and similar purposes.