A better way to say it would be "A good fuse is one that meets its written specifications." They aren't all guaranteed to ever blow at their rated current. Some are, some aren't. Looking one up at random on littelfuse.com just now, I found "time to open" specified as:
150% of rating, max 30 minutes 300% of rating, max 10 seconds Another one says 100% of rating, min 4 hours 135% of rating, max 1 hour 200% of rating, max 1 second Circuit breakers are rated similarly. Remember, nothing is 100% accurate or 100% perfect, so there has to be some "slop" somewhere. 73 and thanks for listening, Carl WS7L "Mr Pedantic" > -----Original Message----- "A good fuse is one that fuses at its rated current. No wonder there is so much confusion about fuses. " ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
