A good indication that a motor may be overloaded is overheating, or in some cases not starting at all. For HVAC motors it can be as simple as belts that may be too tight, inadequate wiring, or voltage ...

Art. 430, Part III provides the requirements for motor and branch-circuit overload protection. Because of inrush current, overload protection is separate from overcurrent and ground fault protection ...

Thanks to ongoing innovations in technology, electrical engineers' approach to motor protection has changed over the years. The traditional strategy to large AC motor protection (e.g., over 500 hp), ...