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How does electric fuse work?

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Anonymous

9y ago
Updated: 4/10/2022

It is simply a piece of wire. It's thin dimensions, limits the amount of current that can be sent through it before it melts.

If too much current passes through it, it will get hot. When it melts, it falls apart and breaks the circuit.

The thicker the fuse wire, the more current it will take before melting and the rating will be stamped on it.

For convenience, the fuse wire is normally contained inside a cartridge of some sort. Sometimes a glass tube with metal end caps, where you can see if the fuse wire is intact inside.

On modern car fuses, the wire is displayed across the top of a piece of coloured plastic with metal blades for connectors.

The current rating is stamped on the top and the color gives a ready indication of the Amperage rating.

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Nedra O'Kon

Lvl 10
3y ago

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