The potato itself is wrapped in the skin. Microwave heating potatoes, sweet potatoes, eggs and other things with skins or shells is easy to burst and catch fire.

Under the action of microwave, the potato skin is extremely dry, and the inside of the potato is coarse fiber, which is easy to ignite, so it catches fire.

There is a special clause in chapter 19 of GB4706.2 1-2008, which simulates potato burning.

From the professional experience, even if there is a fire, electrical appliances can still be used normally. The landlord only needs to clean up the odor and smoke stains in the furnace cavity.