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fuse

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fuse

In electricity, a wire or strip of metal designed to melt (thus breaking the circuit) when excessive current passes through. It is a safety device that halts surges of current that would otherwise damage equipment and cause fires. In explosives, a fuse is a cord impregnated with chemicals so that it burns slowly at a predetermined rate. It is used to set off a main explosive charge, sufficient length of fuse being left to allow the person lighting it to get away to safety.

In an electrical fuse, current flow converts electrical energy into heat energy, increasing the temperature of the fuse material. As more current flows, the temperature of the material rises; at a certain current the material melts, thus interrupting the current flow.

Different types of electrical equipment require differently-rated fuses depending upon how much current can flow without damaging the equipment. For example, some equipment requires a 13 amp fuse and some a 3 amp fuse.
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? Mentioned in ? References in classic literature
 
One of them then lit the fuse and the whole thing was given a shove down the stairway, while the detachment turned and scampered to a safe distance.
Pellucidar by Burroughs, Edgar Rice View in context
He attached the fuse by wrapping the "giant" tightly in a piece of cotton.
Moon-Face and Other Stories by London, Jack View in context
That plotter Waddington, or some of his tools, dropped a bomb where it might have done us some injury, but Professor Bumper, who was a fellow passenger, on his way to South America to look for the lost city of Pelone, calmly picked up the bomb, plucked out the fuse, and saved us from bad injuries, if not death.
Tom Swift In The Land Of Wonders by Appleton, Victor View in context
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