A short circuit is ac circuit of two wire touch each other, without a line in the current electric equipment, and form a loop directly.Short circuit is caused by a variety of reasons,
1 choose rubber line section is inappropriate
2 power load is too big
3 network connecting the power cord
4 rubber line joint treatment
5 wire itself aging or damaged, etc
6 choose the wrong wire specifications
7 inferior wire
8 home appliances lead shorting wires burn out
Due to the resistance of the rubber line itself is small, if only is the loop through the wire, electric current will increase sharply, dozens of times larger than normal, hundreds.For such a big electric current flows through a wire is so thin, the resistance, the greater the heat generated by the more, will be in a very short period of time to make wires produce up to several thousand degrees Celsius temperature, this will cause an accident.