What is the difference between overload protection and fuse or circuit protection?
What will be an ideal response?
Overload protection should not be confused with fuse or circuit protection. Fuses and circuit breakers protect the circuit from some type of high current condition such as shorts and grounds. Overload protection is designed to protect the motor from an overload condition. Assume, for example, that a motor has a full-load current rating of 10 amperes. Also assume that the motor is connected to a 20 ampere circuit. If the motor should become overloaded and the current increase to 15 amperes, the circuit breaker would never trip or the fuse never blow because the current draw is below the 20 ampere rating. The motor, however, will probably be damaged or destroyed because of the excessive current. Overloads are intended to open the circuit when the current exceeds the full-load current rating of the motor by 115 percent to 125 percent.
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What will be an ideal response?
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