help needed quickly, re: ac fuse

Discussion in 'Electrical Forum discussion & Blog' started by Laura Albertini, Jun 5, 2011.

  1. Laura Albertini

    Laura Albertini New Member

    Jun 5, 2011
    Wilmington, NC
    I have a issue with my ac unit 's fuse. How can I tell if it is burned and need a new one.. if so, where would I go and how much are they? The fuse if attached to a t shaped holder, and one side looks like it is burnt, help please!! It is hot in here!
  2. cacher_chick

    cacher_chick Test, Don't Guess!

    Jan 5, 2008
    Test, Don't Guess!
    Land of Cheese
    We don't know what you are looking at, as most central air units do not have fuses.

    If you posted a couple pictures along with the make and model information, it might be helpful.
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  4. SacCity

    SacCity In the Trades

    Mar 14, 2011
    Sacramento, CA
    The fuse is most likly the service disconect which is required for servicing the unit.
    Most likly you have a bussman 30 Amp fuse, but could be more I've seen upto 60 amp fuses but that is alot of power.

    Take the Tee part fuse holder pulls out as part of the service disconnect, just take that to Home Depot and they should be able to hook you up with replacement fuses.
    I think that they are about $4 each.
  5. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Sep 2, 2004
    Retired Systems engineer for defense industry.
    New England
    If the holder looks burnt, it may need to be replaced. Excessive heat can make the springs that hold the fuses and make the connection weak, and make a poor connection, causing more heat and potential failure. If it gets intermittent, it could burn out the compressor as well.
  6. hj

    hj Moderator & Master Plumber Staff Member

    Aug 31, 2004
    Cave Creek, Arizona

    The only way to really tell if a fuse is good or not is with a continuity tester.
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