[Mgs] Fuses

[Steven Trovato]

According to this page (http://www.cooperbussmann.com/pdf/8005.pdf) 
on fuse technology:

The voltage rating of the fuse must be greater than or equal to the 
circuit voltage.  Because the fuse has such low resistance, the 
voltage rating becomes critical only when the fuse is trying to 
open.  The fuse must be able to open quickly, extinguish the arc 
after the fuse element has melted and prevent the system open-circuit 
voltage from restriking across the open fuse element.

Or if you prefer, you can just blame the government.

-Steve Trovato
strovato at optonline.net


At 01:06 PM 10/7/2010, you wrote:
>We're talking US here Paul.  Of course there's a regulation.
>
>On Oct 7, 2010, at 11:00 AM, Paul Hunt wrote:
>
> > Don't quite understand why.  I can understand a fuse*holder* 
> having a voltage rating as that involves insulation.  I know these 
> fuses include a glass tube which is an insulator, but that just 
> holds the ends apart! Unless it's one of those cases where the law 
> dictates that everything electrical must have a voltage rating 
> regardless of how illogical it might be, like having a sell-by date 
> on Worcester sauce.
> >
> > PaulH.