When a motor overheats, its life expectancy goes down. In fact, for every 18C a motor exceeds its rated temperature, life expectancy decreases by one half. Careful power quality planning can reduce excess heating and preserve motor life.
Lightning often strikes in multiple pulses.
The best way to protect your equipment is to unplug and completely disconnect power and data cables. If this cannot be done, invest in high quality surge protection. Some surge protectors claim to operate UL nanoseconds, as if that alone makes them adequate to protect your equipment. All surge protection devices respond 1,000 times faster than necessary, but it takes the right size, quantity, placement and speed to give you ample surge protection. Electrical noise on a computer circuit can cause erratic functioning and lost data.