This Standard applies to all luminaires, with or without integral control gear, that are intended for use in Category V lighting schemes in accordance with AS/NZS 1158.1.1 and in Category P schemes in accordance with AS/NZS 1158.3.1.The requirements set out are, in general, based on engineering practices, construction materials and components that practical experience in the field over many years has shown to be most conducive to luminaires achieving their target service life. An example of this approach is the inclusion in this Standard of luminaires with T5 linear or compact fluorescent lamps and the associated electronic control gear after satisfactory performance over several years in a major trial.It should be noted that departure from these requirements can affect the life of the luminaire, in some cases significantly. Careful evaluation of newer approaches is required to ensure that the expected performance outcomes are realistic and that the risks of implementation are well considered. Guidance on some alternative materials and technologies is given in Appendix A.