Monday, November 24, 2008

Short Circuit and Overload

1.SHoRT CIRCUIT is an abnormal low-resistance connection between two nodes of an electrical circuit that are meant to be at different voltages.In electrical devices, unintentional short circuits are usually caused when a wire's insulation breaks down, or when another conducting material is introduced, allowing charge to flow along a different path than the one intended.


2.FUSE A safety device that protects an electric circuit from excessive current, consisting of or containing a metal element that melts when current exceeds a specific amperage, thereby opening the circuit.There's an excessive current flow and it caused by a short circuit.


3.The CIRCUIT BREAKER is an absolutely essential device in the modern world, and one of the most important safety mechanisms in your home. Whenever electrical wiring in a building has too much current flowing through it, these simple machines cut the power until somebody can fix the problem. Without circuit breakers (or the alternative, fuses), household electricity would be impractical because of the potential for fires and other mayhem resulting from simple wiring problems and equipment failures.


4.OVERLOAD/OVERCURRENT.In electricity supply, overcurrent or excess current is a situation where a larger than intended electric current exists through a conductor.


5.Its because the fuse cannot carry anymore the required voltage of the appliances used.Appliances should be used at exact and right time to avoid blowing of fuse.


6.Leading to excessive generation of heat and the risk of damaging infrastructure and equipment and causing fires.

THAT'S ALL MAAM..AND WE ARE JONELYN AND SHERRY ANNE>>> IV-QUAIL