A fuse can be added to an electric circuit to ____ it from the effects of ____ power. This safety device, which is made of a ____ alloy, is connected ____ with the circuit it has to protect. If an ____ amount of current flows through the circuit, the alloy will ____ and open the circuit. A circuit breaker is fundamental in ____ to protect circuits against ____, overheating and ____. The advantage of a circuit breaker is that it can be ____ after the overloading by replacing the fuse. A professional electrician should always provide his customers with ____ of the electric circuit in the house so that it will be easier to work on it in case of ____.

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