[Jukebox-list] Need help with Rowe-AMI TI-1 fuse replacement

[Carl Haines]

This discussion of plasma arcs reminds me of something that I came 
across some time ago.  It is a page with videos showing some serious 
arcing across *open* breakers on transmission lines.
http://teslamania.delete.org/frames/longarc.htm
The accompanying descriptions on the page are rather interesting.

Carl Haines

Jay Hennigan wrote:
> 
> When a fuse blows from a severe overload, a plasma arc can form across 
> the melted ends.  The higher the open circuit voltage, the easier it is 
> to maintain an arc across a given distance.  A plasma arc throws off a 
> lot of heat and conducts current, two things that blown fuses are 
> supposed to prevent.
> 
> The voltage rating is the maximum open-circuit voltage that the fuse is 
> rated to safely handle ensuring that the arc is quenched.  This is why a 
>  50-amp fuse for an AC air conditioner on 240 volts is significantly 
> larger than one for a 12-volt car air conditioner.  Higher voltage fuses 
> are often filled with sand or ceramic and have longer elements that 
> ensure that the elements of a blown fuse separate far enough to 
> extinguish any arc that would form.
> 
> -- 
> Jay Hennigan - CCIE #7880 - Network Engineering - jay at impulse.net
> Impulse Internet Service  -  http://www.impulse.net/
> Your local telephone and internet company - 805 884-6323 - WB6RDV
> _______________________________________________
> Jukebox-list mailing list
> Jukebox-list at lists.netlojix.com
> http://lists.netlojix.com/mailman/listinfo/jukebox-list
>