Question

when does an electric short circut occure

Answer 1

WHEN THE LIVE WIRE OR RED WIRE  COMES CONTACT IN BLACK WIRE  . THEN THE ELECTRIC SHORT CIRCUIT OCCUR

Answer 2

A common type of short circuit occurs when the positive and negative terminals of battery are connected with a low resistance conductor, like a wire. With a low resistance in the connection, a high current will flow, causing the delivery of a large amount of energy in a short period of time.