This International Stanadrd deals with the safety of electric thermal-storage room heaters for household and similar purposes, their rated voltage being not more than 250 V for single-phase appliances and 480 V for other appliances. Appliances not intended for normal household use but that nevertheless may be source of danger to the public, such as appliances intended to be used by laymen in hotels, fitness centres and similar places, are within the scope of this standard. As far as is praticable, this standard deals with the common hazards presented by appliances that are encountered by all persons in and around the home. However, in general, it does not take into account -- the use of aplpiance by young children or infirm persons without supervision; -- playing with the appliance by young children. NOTE 1 : Attention is drawn to the fact that -- this standard only applies to self-contained thermal-storage room heaters. However, it may be used as a guide, in so far as it reasonably applies, to determine the requirements and test specification for other thermal-storage room heater; -- for heaters incorporating direct-acting heating elements, IEC 60335-2-30 is also applicable; -- for heaters intended to be used in vehicles or on board ships or aircraft, additional requirements may be necessary; -- in many countries additional requirements are specified by the national nealth authorities, the antional authorities responsible for the protection of labour, the national water supply authorities and similar authorities.