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A fuse trips when the current in the circuit is too high. You either have a failing component, a shorted wire, or too many components in the circuit.

Well, my fuses don't keep tripping. But apparently yours are, so here goes: first of all, fuses don't "trip", their elements burn or melt due to more current or amps passing through them than the fuse is rated for.

Circuit breakers "trip" for the same reason but can be reset whereas fuses can't be reset but must be replaced.

There are numerous reasons why your fuses keep burning out. Understand that the fuse is there to protect the wiring and the device the fuse is supplying power to.

The most common reasons are:

1. the fuse is too "small", that is, its amp rating is too low for the load. However, do not install a higher amp rated fuse into the circuit unless you are absolutely sure of the correct circuit amperage rating. Otherwise you may burn up the wiring on the load side of the fuse or damage the device it is supplying power to. If the fuse was factory installed, then it should be the correct amperage rating.

2. assuming the fuse is the correct size (amp rating) then the load it is supplying power to is drawing too much current and is defective, and should be replaced. What is the load the fuse is supplying power to? If you post a more definitive question, someone may be able to give you more information.

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12y ago
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Q: Why do your fuses keep tripping?
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