Deals with the safety of electric warming plates, warming trays and similar appliances intended to keep food or vessels warm, for household and similar purposes, their rated voltage being not more than 250 V. Appliances intended for nomal household and similar use and that may also bu used by laymen in shops, in light industry and on farms, are within the scope of this standard. However, if the appliances is intended to be used professionally to keep vessels warm or to process food for commercial consumption, the appliance is not considered to be for household and similar use only.This standard however, in general, does not take into account the use of appl