need a quick fuse lesson

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I need to get myself a 125V 5A 1/4" fuse tomorrow since I did not have the
guts to put a 250V 5A in place of it. I need a refresher here....why
shouldn't 5A =5A .....I can't remember what fuses failure is based on?
Resistance or temperature??
 
"no spam for me" <no_ spam_please@verizon.net> wrote in message
news:BbSxb.28196$ZV6.14558@nwrddc02.gnilink.net...
I need to get myself a 125V 5A 1/4" fuse tomorrow since I did not have the
guts to put a 250V 5A in place of it. I need a refresher here....why
shouldn't 5A =5A .....I can't remember what fuses failure is based on?
Resistance or temperature??
250v is fine, the voltage rating is the maximum voltage that the fuse can
safely interrupt, you could use a 5A 25,000v fuse here and it would work
just fine and be perfectly safe, but a waste of a very expensive fuse in
that case.
 
James Sweet <jamessweet@hotmail.com> wrote:



"no spam for me" <no_ spam_please@verizon.net> wrote in message
news:BbSxb.28196$ZV6.14558@nwrddc02.gnilink.net...
I need to get myself a 125V 5A 1/4" fuse tomorrow since I did not have the
guts to put a 250V 5A in place of it. I need a refresher here....why
shouldn't 5A =5A .....I can't remember what fuses failure is based on?
Resistance or temperature??



250v is fine, the voltage rating is the maximum voltage that the fuse can
safely interrupt, you could use a 5A 25,000v fuse here and it would work
just fine and be perfectly safe,
Assuming it fit in the available space.

but a waste of a very expensive fuse in
that case.
Agreed.
 

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