Question

what do you mean by short circuit? Why does a short circuit damage electric wiring and devices connected to it?

Answer 1

short circuit means cause of dire due to wires

Answer 2

Short Circuit : an electrical circuit in a device of lower resistance than that of a normal circuit, especially one resulting from the unintended contact of components and consequent accidental diversion of the current.

A common type of short circuit occurs when the positive and negative terminals of a battery are connectedwith a low-resistance conductor, like awire. ... Overloaded wires will also overheat causing damage to the wire'sinsulation, or starting a fire.

In a short circuit the current drawn from the main exceeds the maximum limit 20 A. This will lead to overloading which can damage the electrical appliances.
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