about fuse fuse

Discussion in 'The Projects Forum' started by Lightfire, Mar 14, 2011.

  1. Lightfire

    Thread Starter Well-Known Member

    Oct 5, 2010
    690
    21
    hello,

    i has a fuse rated 250 VAC and 30 amperes but someboday said, it wont work. but it works with a 12 volt car battery and 12 volt light...

    no problem just works :D just the same... :D

    is it ok is it ok but have some safety problems? u.u
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Yes, there are safety problems. Fuses have voltage ratings for a reason - it means that the element will blow open at that voltage. Using a 250 volt fuse in a low voltage circuit means the fuse may not open on a fault, giving no protection.

    You should look for an automotive fuse instead. They will open reliably at 12 volts. That 30 amp rating will not be a problem.
     
  3. Lightfire

    Thread Starter Well-Known Member

    Oct 5, 2010
    690
    21
    but in Philppines, it is very hard to find like that. :( they said it's very rare u.u... :)

    anyway, no problem about 30 amp? but it is ok to use the fuse? just for design? :D
     
  4. creakndale

    Active Member

    Mar 13, 2009
    68
    7
    Huh? What? Might want to study Voltage Ratings of fuses a bit more.

    creakndale
     
  5. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
  6. CDRIVE

    Senior Member

    Jul 1, 2008
    2,223
    99
    <snip>, I hate when that happens but it does! I'm always telling the wife.. " Oh yeah! I'll bet my left <snip> on that!"... and she says .. "Oh yeah! Well, you bet and lost it a long, long time ago!" :D
     
    Last edited by a moderator: Mar 14, 2011
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