ESL / EFL Quiz 87

Circuit protection devices are designed to automatically limit or shut off the flow of electricity in the event of a ground fault, overload, or short circuit in the wiring system. Fuses, circuit breakers, and ground fault circuit interrupters are three well known examples of such devices. Fuses and circuit breakers prevent over heating of wires and components that might otherwise create hazards for operators. They disconnect the circuit when it becomes overloaded. This overload protection is very useful for equipment that is left on for extended periods of time, such as stirrers, vacuum pumps, drying ovens, Variacs and other electrical equipment.