From: rertman@ix.netcom.com
Date: Sun Dec 21 2003 - 08:37:35 PST
Lar, you hit it right on the head!!
Congrats!!
Dick
Retired Lockheed Skunk Works Electronics Engineer
LAWRENCE TIGHE wrote:
>
> I believe the voltage rating is in consideration of arcing. A fuse ampere
> rating is not related to the voltage...i.e., 2 amperes is 2 amperes. Seems
> I remember the voltage rating is that at which there will NOT be a sustained
> arc when the link breaks.
>
> If, for example, a 125 volt rated fuse is in a 500 volt circuit and the fuse
> blows, there is a possibility that the voltage across that fuse will arc
> from one end of the fuse to the other thus a fire possibility. Or, so I was
> told.
>
> In old trolley cars, the 100 volt light bulbs were hooked eight in series
> and they equaled the 800 volts of the trolley overhead. If one bulb burned
> out, that would put 800 volts DC across that bulb and it would explode and
> arc....but for an arc supressor across each bulb. Ain't much difference
> between a bulb and a fuse...it was explained to me.
>
> Lar
>
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