"This part of IEC 60079 specifies requirements for the construction@ testing and marking for Group II electrical apparatus with type of protection@ ""n"" intended for use in explosive gas atmospheres. This part is applicable to non-sparking electrical apparatus and also to electrical apparatus with parts or circuits producing arcs or sparks or having hot surfaces which@ if not protected in one of the ways specified in this standard@ could be capable of igniting a surrounding explosive gas atmosphere. This standard describes several different methods by which this can be achieved which may be combined with other methods described in IEC 60079-0. NOTE 1 A non-incendive component is limited in use to the particular circuit for which it has been shown to be non-ignition capable and@ therefore@ cannot be separately assessed as complying with this standard. NOTE 2 Compliance with this standard does not imply any removal of@ or lowering of the requirements of any other standard with which the electrical apparatus complies. NOTE 3 This part supplements@ and may enhance@ the requirements for apparatus for normal industrial applications. Where compliance with other IEC standards is indicated@ such as IEC 60034 for motors and IEC 60598-2 for luminaires@ proving compliance to those standards is normally the responsibility of the manufacturer."