Try to find the problem and correct it. Then, turn the main switch off, replace the burnt out fuse with a new one and turn the main switch back on. If the new fuse also blows, check again for the cause. If you are unable to determine the cause, call an electrician. Once the problem has been fixed, switch the circuit breaker back on.
Electricity naturally moves through the easiest path it can find.
It is transmitted through materials called conductors. Things that do not conduct electricity well are called insulators. Insulators are usually made of ceramic, plastic, glass, or rubber. Wires that carry electricity to a switch or device are normally covered with insulating material. The human body is an excellent conductor because it is about 70 percent liquid.