1.) short circuit - allows a charge to flow along a different path from the one intended
*unintentional short circuit occurs when electricity traverses a path that is different from what has been intended. This usually happens when the insulating material or layer between two conductive materials breaks down or when a conductive material is directly introduced between these two conductive materials
2.)Fuse - short for 'fusible link', is a type of overcurrent protection device. Its essential component is a metal wire or strip that melts when too much current flows
* when we blow a fuse it may overheat and be damaged, or even start a fire
3.)circuit breaker -is a device that automatically breaks an electrical circuit whenever the circuit becomes overloaded or an unintentional short circuit occurs. Circuit breakers have a set electric current load capacity which when breached results to automatic circuit shutdown.
4.)Overloading occurs whenever the wires comprising an electrical circuit are forced to carry and conduct an electric charge beyond their capacity. Whenever this happens, the wires heat up. This may result in insulation breakdown (in which a short circuit may occur) or an electrical fire.
5.)There are many reasons why a fuse may blow to disconnect an electrical circuit. As one example, a circuit may include one or more devices that have a varying load or resistance, which in turn creates variances in the amount of current flowing through the circuit. If too many devices are added to the circuit and draw too much current at one time (e.g., simultaneously operating headlamps, stereo, air conditioning, windshield wipers, and electric windows in a car), a fuse may blow to protect the devices from an overload.
6.) Short circuits and overloading may result in overheating, circuit damage, explosion, and even fire.
Ebarle , Kyle J.
IV - DOVE
Thursday, December 6, 2007
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