This standard applies to connecting devices as separate entities for the connection of two or more electrical copper conductors (complying with IEC Publication 228) rigid (solid or stranded) or flexible, having a cross-sectional area of 0,5 mm2up to and including 35 mm2and equivalent AWG conductors with a rated voltage not exceeding 1 000 V a.c. up to and including 1 000 Hz and 1 500 V d.c. where electrical energy is used for household and similar purposes. Connecting devices complying with this standard shall not require the use of special tools, other than for twist-on connecting devices. This standard contains the general requirements to be used together with the Parts 2, containing detailed particular requirements.