M.J. Gregory wrote:
> ...Note that in the UK the PFA
> does not encourage the use of fuse links rather than fuses.
I once tested a #20 fusible link, using Mil Spec aircraft wire. If you pass
enough
current through it, to shorten it's response time to that of a real circuit
protection device at the low end of spec, the physically tough insulation causes
a violent explosion, equivalent to a firecracker. Luckily I had a brief
moment of nonstupidity to rig the test using a remote switch! How theoretical
such a fault condition is I don't know, but a fuse means we needn't theorize.
A google search on the topic discloses there's thus preferred insulation
material
-- before wire as a fusible link became obsolete years ago in automobiles....
Regards,
Fred F.
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