Motor Fundamentals By Eric A. Woodroof, Ph.D., CEM, CRM, PCF Buildings Magazine July 2017 DOWNLOAD PDF Motors use more energy than any other single appliance type in the world. In addition- the annual electric cost to operate a heavily used motor can be 5 to 10 times the purchase price of the motor, so it is important to evaluate the “total cost of ownership” when buying a motor. When you consider that motors are on pumps, fans, compressors and many other devices, it is wor