IEC 60670-22-2003 pdf – Boxes and enclosures for electrical accessories for household and similar fixed electrical installations – Part 22: Particular requirements for connecting boxes and enclosures.
1 Scope This clause of Part 1 applies with the following addition: Add after the fourth paragraph: This standard applies to connecting boxes for junction(s) and/or tapping(s). NOTE Unless otherwise stated, throughout the document the term “boxes” also applies to “enclosures”. 2 Normative references This clause of Part 1 applies with the following addition: IEC 60998 (series), Connecting devices for low-voltage circuits for household and similar purposes IEC 60999-1 :1 999, Connecting devices – Electrical copper conductors – Safety requirements for screw-type and screwless-type clamping units – Part 1: General requirements and particular requirements for clamping units for conductors from 0,2 mm 2 up to 35 mm 2 (included) 3 Definitions This clause of Part 1 applies with the following additions: 3.1 01 connecting box junction box box allowing connection of conductors 3.1 01 .1 junction connecting box connecting box allowing connection of one or more junctions 3.1 01 .2 tapping connecting box connecting box allowing connection of one or more taps from one or more main conductors NOTE Connecting boxes according to 3.1 01 .1 and 3.1 01 .2 may be combined.
3.1 01 .3 cord outlet connecting box connecting box allowing one or more connections to be made between a fixed installation and a flexible cable 3.1 02 connecting box with integral clamping units connecting box in which clamping units are permanently retained as an integral part of the box (see Annex AA) 3.1 03 connecting box with incorporated terminals or connecting devices connecting box with detachable terminals or connecting devices retained within the box by mechanical means (see Annex AA) 3.1 04 connecting box with provisions for subsequent incorporation of terminals or connecting devices connecting box with provisions for incorporating terminals or connecting devices to be retained within the box by mechanical means (see Annex AA) 3.1 05 connecting box for floating terminals or connecting devices connecting box intended to accommodate terminals or connecting devices but without provision to retain them (see Annex AA) 3.1 06 rated connecting capacity cross-sectional area of the largest conductors as declared by the manufacturer 3.1 07 terminal insulated or non-insulated re-usable connecting device intended for electrical connection of conductors of cables 3.1 08 clamping unit part(s) of a terminal necessary for the mechanical clamping and the electrical connection of the conductor(s) including the parts which are necessary to ensure correct contact pressure 3.1 09 connecting device device for the electrical connection of two or more conductors comprising one or more terminals and if necessary, insulation and/or ancillary parts 4 General requirements This clause of Part 1 is applicable. 5 General notes on tests This clause of Part 1 applies with the following addition:
5.2 Add at the end: Connecting boxes with provision for subsequent incorporation of terminals or connecting devices are tested with the terminals or connecting devices recommended by the manufacturer. 6 Ratings This clause of Part 1 is replaced by: 6.1 The preferred values of the rated voltage of the integrated or incorporated connecting devices are 1 30 V, 250 V, 450 V, 750V, 1 000 V a.c. and 1 500 V d.c. 6.2 The standard rated connecting capacities are 0,2 mm 2 , 0,34 mm 2 , 0,5 mm 2 , 0,75 mm 2 , 1 mm 2 , 1 ,5 mm 2 , 2,5 mm 2 , 4 mm 2 , 6 mm 2 , 1 0 mm 2 , 1 6 mm 2 , 25 mm 2 , 35 mm 2 . NOTE 1 For the time being, designation by wire gauge may be used in some countries (for example AWG in US and CA), instead of the cross-sectional areas expressed in mm 2 . NOTE 2 The approximate relation between mm 2 and AWG sizes is given in Appendix A of IEC 60999-1 . NOTE 3 In UK, a standard connecting capacity of 1 ,25 mm 2 is used. NOTE 4 In Japan, standard connecting capacities of 0.9 mm 2 ,1 .25 mm 2 ,2.0 mm 2 , 3.5 mm 2 , 5.5 mm 2 , 8 mm 2 , 1 4 mm 2 , 22 mm 2 are used.