Hazard of short circuit

There will be a current passing through, and a short circuit means that the current is very large and will not pass through any electrical appliances. Only when the power supply is burnt out will there be no current passing through.

power?cut；blackout

When the power supply is short-circuited, the current on the circuit will be very large. Such a large current can't be borne by batteries or other power sources, which will cause power damage.

Conductor overheating

Because the current is too large, the conductor temperature will rise, which may cause fire in serious cases.