28 Dec
2003
28 Dec
'03
2:54 p.m.
As I recall from the UL presentation I once attended,
fuse voltage is
pretty
much irrelevant, within certain windows. Most of the
reason fuses have
voltages ratings has to do with the carriers and the arc-over voltage.
Wouldn't the fuse also have to dissipate (2 amps-epsilon) squared times the
fuses internal resistance indefinitely? (If the resistance approached an
ohm, that would be almost 4W.) I guess that would be independant of voltage
though.
Also, wouldn't the fuse have to be rated not to explode/burst/set the
appliance afire while dissipating boatloads of watts (250V/1ohm = 250amps,
250A*250V=62Kw) for as long as it takes to vaporize?
Vince