No, it is not safe to use a microwave with exposed wiring. Exposed wiring poses a significant risk of electrical shock or even fire hazard. Microwaves, like any electrical appliances, should always be in good working condition with all wiring properly insulated and protected.
If you notice exposed wiring or any other visible damage to your microwave's wiring, it is crucial to immediately stop using the appliance and unplug it from the power source. Continuing to use a microwave with exposed wiring can lead to electrical malfunctions, short circuits, or even electrical fires, which can pose a serious danger to your safety and property.
In such cases, it is best to contact a professional technician or the manufacturer's customer support for guidance on repairs or whether the microwave should be replaced. It is essential to prioritize safety and ensure that all electrical appliances are in good working order before using them.