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More Hot Fuses Question 700

uid 27's pic
posted by  Art Benstein on  Sat Dec 19 13:11 CST 2015
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last visit: Fri Oct 17 20:10 CST 2014
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OK, I'm not familiar with a 700.

I am familiar with the eurofuses in a 240. The contact between the fuse and its holder is often a high resistance contact for which we recommend (1) using similar metal fuses such as copper or brass, (2) protection from moisture and oxidation with grease. Any heat developed at the contacts is a result of this contact resistance and its cause is local to the heat, not the result of "too much current being drawn by the load."

The fuse itself is normally warmer than you might think. In order to know this for yourself, you would have to be that one in a million owner who feels his fuses on the brand new car (in 1989). Then you'd know that a fuse needs to exhibit enough resistance so that it will indeed melt that piece of metal when the load is appropriately higher than its rating. That's the way any simple fuse works. Heat. Melting.
--
Art Benstein near Baltimore

The math professor went crazy with the blackboard; he did a number on it.






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