【正文】 s a reference document for other IEC technical mittees and submittees. A box or an enclosure which is an integral part of an electrical accessory and provides protection for that accessory against external influences (for example mechanical impact, ingress of solid objects or water, etc.) is covered by the relevant standard for such an accessory. This standard does not apply to – ceiling roses。 – boxes, enclosures and parts of enclosures specifically designed to be used for cable trunking and ducting systems plying with IEC 61084 and which are not intended to be installed outside of these systems. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60068275:1997, Environmental testing – Part 275: Tests – Test Eh: Hammer tests IEC 60112:1979, Method for determining the parative and the prooftracking indices of solid insulating materials under moist conditions IEC 60423:1993, Conduits for electrical purposes – Outside diameters of conduits for electrical installations and threads for conduits and fittings IEC 60529:1989, Degrees of protection provided by enclosures (IP Code) EN 606701:2020 – 6 – Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 08:32:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IEC 60695211:2020, Fire hazard testing – Part 211: Glowing/hotwire based test methods Glowwire flammability test method for endproducts IEC 60695102:1995, Fire hazard testing – Part 102: Guidance and test methods for the minimization of the effects of abnormal heat on electrotechnical products involved in fires – Method for testing products made from nonmetallic materials for resistance to heat using the ball pressure test Text deleted IEC 61032:1997, Protection of persons and equipment by enclosures – Probes for verification IEC 61084 (all parts), Cable trunking and ducting systems for electrical installations IEC 61140:2020, Protection against electric shock – Common aspects for installation and equipment 3 Definitions For the purposes of this part of IEC 60670, the following definitions apply. enclosure bination of parts, such as boxes, covers, coverplates, lids, box extensions, accessories, etc., providing after assembly and installation as in normal use, an appropriate protection against external influences, and a defined protection against contact with enclosed live parts from any accessible direction (see Annex A) box part of an enclosure provided with means for fixing a cover, coverplate, accessory, etc., and intended to receive accessories (such as socketoutlets, switches, etc.) box extension part of an enclosure which is intended to extend a box for the purpose of either increasing the internal volume of the box or enclosure or to adjust for mounting the box flush or semiflush with the finished surface of a wall or the like lid, cover or coverplate part of an enclosure, not integral with or part of an accessory, which may either retain an accessory in position or enclose it raised cover cover intended for mounting directly onto a box to provide for the attachment of accessories and to increase the internal volume of the enclosure NOTE The centre portion of the cover is raised to acmodate a specific wall or ceiling thickness and to permit the mounting of the accessory on it, flush with the surface of the wall or ceiling. EN 606701:2020 – 7 – Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 08:32:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI exposed conductive part conductive part of electrical equipment, which can be touched and which is not normally live, but which can bee live when basic insulation fails surface mounting box or enclosure box or enclosure which is intended for mounting on a surface (see Annex A) flushmounting box or enclosure box or enclosure which is intended for mounting flush with the surface (see Annex A) semiflush mounting box or enclosure box or enclosure which is intended to fit within a mounting surface and partially projects from the mounting surface cable gland device designed to permit the entry of a cable into an enclosure and which provides sealing and retention. It may also provide other functions such as earthing, bonding, insulation, cable guarding, strain relief or a bination of these seal (packing) material used to fill up the space between the inside of a gland and the cable passing through, usually pressed by the gland and thereby forming a joint gasket material introduced between mating surfaces of an enclosure which in pression forms a joint grommet ponent used to support and protect the cable or conduit at the point of entry. It may also prevent the ingress of moisture or contaminants (see Figure 1) entry membrane ponent or an integral part of an enclosure used to protect the cable which may be used to support the cable or conduit at the point of entry NOTE An entry membrane may also prevent the ingress of moisture or contaminants and may be part of a grommet (see Figure 1). protecting membrane ponent or an integral part of an enclosure that is not intended to be perated in normal use and is intended to provide protection against ingress of water or solid objects and/or to allow the operati