This clause of part 1 is replaced by the following : This international standard deals with the safety of microwave oven for household use, their rated voltage being not more than 250 V. This international standard also deals with combination microwave ovens , for which annex AA is applicable As far as is practicable , this standard deals with the common hazards presented by appliances that are encountered by all persons in and around home . however , in general it does not take into account - the use of appliances by young children or infirm persons without supervision; - playing with the appliance by young children.