Fuses fuses fuses


Ok, this is about fuses

1- a standard Bussman fuse is UL approved. Are any "high end" fuses UL approved?

2- do any component manufacturers supply their gear with any of the usual suspects of high end fuses as opposed to a standard Bussman?

3- let's say fuses do make a difference. Given incoming power is AC, why could fuses be directional? 

Not meaning to light any fires here- 

thanks in advance 
zavato
@geoffkait
You may think that its pretty obvious, but in cable manufacturing that isn't the case.... Impedance, DC resistance, inductance, capacitance, skin effect all come into the effect of a cable....
Of course here we are speaking of a simple wire, maybe I shouldn't assume that a tasty gourmet fuse would have more than simple DC resistance as a parameter. 
@atmosphere   Hi Ralph,  yep, read your post, it makes all the sense in the world.  So understanding your own equipment will go along way in getting this right the first time. Appreciate you brother,  Tim 

timlub
@geoffkait
You may think that its pretty obvious, but in cable manufacturing that isn’t the case.... Impedance, DC resistance, inductance, capacitance, skin effect all come into the effect of a cable....
Of course here we are speaking of a simple wire, maybe I shouldn’t assume that a tasty gourmet fuse would have more than simple DC resistance as a parameter.

>>>>You might possibly be overthinking this. I never said it was that simple. Obviously other factors/parameters are involved but fuses always sound best when the resistance is minimum, I.e., conductivity is highest. You can forget about the other parameters. Were you seriously considering measuring skin effect? 😀

I think you would probably agree there are many parameters involved with testing fuses other than the fuse parameters themselves, no? Parameters involved with the test itself.

I suggest you take a gander at the data sheets for fuse measurements on the HiFi Tuning website which are linked to somewhere on this thread.

By the way, when it comes to fuses nothing makes "all the sense in the world."