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A fuse is a safety device to prevent excess current flowing in an electric circuit. It consists of a thin metal wire of low resistance and low melting point. When an electrical appliance or some other piece of electrical equipment becomes faulty, therefore allowing an excess electric current to flow through its circuit, this causes the wire inside the fuse to melt and thus break the flow of current.
Fuses, by design are a one-time-use protective device - once they are used ("burn out"), they're worthless. That is why homes typically use circuit breakers: a breaker acts similarly to a fuse in that it opens a circuit when excessive current flows, but - because nothing actually melts inside it - it can then be reset without having to be replaced by a new one, as has to be done for a fuse.
If there were no fuse in the circuit, serious damage could be caused to the wiring which feeds the equipment. It could get so hot that it catches on fire, which might start a fire in the building or vehicle in which the electrical equipment is installed.
For more information see the answer to the Related Question shown below.
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How does a fuse work in short sentence?
that fuse was bommed
Does a cigarette lighter work on a fuse?
no it doesn't The circuit is protected by a fuse.
Why does the radio not work in a Pontiac vibe?
check the fuse in the fuse box
Where is the IOD fuse in a Dodge Grand Caravan?
The IOD fuse is on the left side of the fuse box under the hood, is a 15 AMP fuse. Without or blowed fuse, the radio would not work, power locks does not work, accessories light would not work. This information is for a 1999 Dodge Grand Caravan.
Is there a fuse replacement to get the dash lights to work on a 1993 Seville?
There is a fuse replacement to get the dash lights to work on a 1993 Seville. The fuse for the instrument panel is located in the fuse box inside the passenger side of the trunk.
Which fuse do you change when lights inside don't work?
interior light fuse
If the Cigarette lighter doesn't work on a 98 VW jetta and the radio does work Is it a fuse or the lighter itself?
Its the fuse.. if not that check the wiring..
Brakelights dont work but headlights do?
check the fuse on the fuse box, the bulbs,or the connections.
Speedometor does not work but the tachometer does work on 1994 f-350?
You could have a blown fuse. If your Dome light don't work when you open the door and the speedometor doesn't work when you drive and your miles don't show up then you probaly have a blown fuse. It's a 15 amp fuse.
Electric outlet is off does not work on Nissan Murano?
check fuse panel for a blown fuse
How can you check to see why a plug on an electric stove will not work - the fuse is good.?
check the other fuse.
Why the power outlets in your endeavor 06 don't work?
Check the fuse.Check the fuse.
