28 Dec
2003
28 Dec
'03
2:19 p.m.
On Sun, 28 Dec 2003 14:46:44 -0500
Chad Fernandez <fernande(a)internet1.net> wrote:
I went to Radio Shack last night to buy a fuse for my
laserdisc
player.
I needed a 125v 2amp fuse. Most of the fuses I saw were rated at
250v. I bought a 250v .75amp fuse, thinking that if I up the voltage
I have to lower the amperage. The new fuse blows instantly. Am I
thinking about this incorrectly?
Yes. The voltage of the fuse is only the maximum
it can "switch" off
savely. i.e. You can use a 250 V fuse in a 110 V circuit but not vice
versa. A 125 V fuse may not cut the circuit completely (arcing etc.) in
a 250 V circuit. You have to get the same ampere rating and
characteristic (Slow, Medium, Fast) regardless of voltage.
--
tsch??,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/