Why do electric motors burnout?

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Ultimately, they burn out because the electric power P=I2R they consume exceeds their ability to dissipate it. The excess power turns into thermal energy, which leads to temperature rise, which eventually exceeds the operating temperature of some components: the insulation on the windings, or the solder joints, or the melting temperature of the metal itself.

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Author: https://www.quora.com/Why-do-electric-motors-burnout