The microwaves will not penetrate the metal; they can, however, induce an electric current in the bowl which is likely to have no consequence unless the metal has jagged edges or points. Then “arcing” can occur and sparks will fly. If there is something combustible in the oven, a fire is … Read full review
Beware of microwave oven arcing: If you hear a crackling sound during operation, you should observe the oven cavity for arcing: sparks or flashes often occurring near rack supports. Arcing can be caused by a dirty wave guide or the exposed metal of a damaged interior wall. Why is my microwave … Read full review
If you get an electric shock when you touch the case of a microwave then it is possible that the microwave is not grounded. Why would a microwave shock you? Microwave ovens use high voltage which makes it particularly hazardous for consumers to remove the cover and touch electrical parts. The … Read full review
If by burning you mean flames, then yes, flames and the subsequent soot can damage your machine. Microwave are built tough, but if something caught fire in yours, clean it carefully after it has cooled down. Then do checks of its operation using a bowl of water. Is it safe to … Read full review
Should I worry if my outlet sparks? Sparks occasionally fly when you plug in an appliance. This happens when electricity reaches out to meet the incoming metal to complete its circuit. This type of sparking is normal and shouldn’t worry you unless the sparks have an unusual smell or appearance. What … Read full review