This document specifies requirements for the installation of cabling on railway vehicles and within electrical enclosures on railway vehicles@ including magnetic levitation trains and trolley buses. NOTE With respect to trolley buses@ this document applies to the whole electric traction system@ including current collecting circuits@ power converters and the respective control circuits. The installation of other circuits is covered by street vehicle standards for example those for combustion driven buses. This document covers cabling for making electrical connections between items of electrical equipment@ including cables@ busbars@ terminals and plug/socket devices. It does not cover special effect conductors@ such as fibre optic cables or hollow conductors (waveguides). The material selection criteria given herein are applicable to cables with copper conductors. This document is not applicable to the following: ?C special purpose vehicles@ such as track-laying machines@ ballast cleaners and personnel carriers; ?C vehicles used for entertainment on fairgrounds; ?C vehicles used in mining; ?C electric cars; ?C funicular railways.