Must an electric power tool have a functional ground prong before use?

An electric power tool must indeed have a functional ground prong before use, especially for safety reasons. The ground prong serves as a safety feature that protects the user from electric shock. If there is a fault in the tool's wiring or insulation, the ground prong ensures that the electricity is directed away from the user and safely to the ground, significantly reducing the risk of injury.

Without a functional ground prong, the tool may expose the user to live electrical components, increasing the chances of electric shock, which can lead to severe injuries or even fatalities. This is particularly crucial in environments where the tools may come into contact with moisture, increasing the risk of electrical hazards. Therefore, having a working ground prong is essential for any electric power tool in usage.