protection from electric shock .
Design features of sockets have gradually developed to reduce the risk of electric shock and fire. Safety measures may include pin and slot dimensions and layout that permit only proper insertion of plug into socket, and earth pins designed such that the device becomes earthed before power is connected. Shutters that open only for the correct plug prevent foreign objects from contacting live slots.
However, the electrical outlet is a modern convenience that we often take for granted – until it becomes an inconvenience. There have been a number of developments to make the outlet a safer, more user-friendly innovation relative to its origins of do-it-yourself wiring and light-bulb socket plugs. Its history is intertwined with that of modern household lighting and electricity. In today’s world, socket outlets have been designed to significantly reduce the risk of electrical hazard, reduction of power consumption consequently reducing the tariffs on electricity. However, due to human carelessness and busyness electrical hazards still occur for instance leaving your electrical cooker on when you are not around can cause inferno.
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