All houses have either a fuse box or a circuit breaker box, but usually not both. Fuses are inserted into the electric wiring of your house. They are located in the fuse box, which is located at the point where the power entering your house is divided up into the different circuits. A fuse is made of a strip of wire that has high resistance but melts at a relatively low temperature. The fuse is placed somewhere in the circuit and if the current gets too high, the wire in the fuse melts and immediately opens the circuit, stopping the flow of electricity. The circuit is “blown” and electricity can no longer complete the circuit.