Deals with the safety of microwave ovens with a cavity door intended for commercial use, their rated voltage being not more than 250 volt for single-phase appliances connected between one phase and neutral and 480 volt for other appliances; the safety of combination microwave ovens with a cavity door, the requirements for which are contained in Annex AA; the safety of microwave ovens without a cavity door and with transportation means that are intended for commercial use only, for the heating of food and beverages, the requirements for which are contained in Annex BB. Changes in this edition concern requirements for microwave ovens without a cavity door and with transportation means that are intended for commercial use only for the heating of food and beverages.