oregonpapaReally!!! this smells, if you have been "ordered" that we are to be left in the dark, then please tell the full "secret" rundown why these magic fuses work to others who are privileged, almarg ect.
There are a few of us who have been given the full rundown on WHY these fuses work the magic they do. The problem is, we have been instructed to not tell you and Wolfie. Sorry.
Let them see if it’s all smoke and mirrors. I will concede and become a believer if someone with electronic knowledge like almarg says it correct, even without knowing the "full rundown".
Once again this is all fusers need to know.
All potential fusers need to remember that fuses deteriorate with age from switch on surges (as pictured), and they just need to be replaced with good quality $2 fuse of the same value, as Almarg linked to.
https://i.stack.imgur.com/0uqWX.jpg
http://www.digikey.com/products/en/circuit-protection/fuses/139
Cheers George