Thread: Fuses
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Old 8th Jan 2007, 2:45 pm   #4
ppppenguin
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Default Re: Fuses

Peter Munro has written an excellent introduction to the subject. His mention of the rather specialised FF fuses reminds me of the definition of a semiconductor:

A device that blows in order to protect the fuse

If you have to replace a blown glass fuse it's worth a careful look at the old one. If it's badly blackened or even shattered then there was a short circuit. If most of the wire is intact with no evidence of violence it may have just died of old age or possibly a mild long term overload. It's pretty obvious that you would use different methods to diagnose these different faults.
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