[Duo2400] Re: 2400 fuse

[Stephen]

??? The voltage rating of a fuse is VERY important. I don't know
how much damaged Marine electronic gear I've seen over the years
where someone used a 120v fuse instead of a 12v fuse of the same
amperage. P = VI, power equals volts times amps.

Stephen

>Hi!
>
>There would not normally be a voltage rating for a fuse, because they
>work on the amount of current passed, not the voltage.  5 amps at 1 volt
>is the same as 5 amps at 110 volts as far as a fuse is concerned.  A
>fuse has a very low resistance, and works (blows) only on the basis of
>the differential voltage between the two ends, not the absolute voltage.
>I=V/R if I remember correctly.
>
>There may of course be other considerations, such as size or rate of
>blow, but a voltage rating will normally only refer to the amount of
>insulation in the construction of the fuse, etc., which prevents arcing
>over to other nearby components.
>
>Have a great New Year,
>
>Andy
>
>---------------------------------------
>Andy Nicholl
>Dunfermline, Scotland
>Fax 0870 130 4955
>email andynic at bigfoot.com
>----------------------------------------