The enclosure is the motor casing. There are different types of enclosures. These include open drip proof (ODP), totally enclosed fan cooled (TEFC), totally enclosed non-ventilated (TENV), and totally enclosed air over (TEAO). Open drip proof motors have openings that allow air to flow through the motor to cool the windings. These are typically used […]
The service factor is the amount of overload capacity that any motor has. For example, if there is a service factor of 1.25, it means that the motor can deliver 25% more than the rated horsepower without hurting the integrity of the windings. Service factors will vary for different motors and for different speed ratings.