From: LAWRENCE TIGHE (larryradio@worldnet.att.net)
Date: Sat Dec 20 2003 - 17:52:05 PST
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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