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  1. #66
    Join Date
    Mar 2015
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    Hamersville, Ohio
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    Quote Originally Posted by ECtofix View Post
    Someone mention maybe the wrong fuses being used. Possibly...

    I've come behind other techs who've installed class CC fuses UPSIDE-DOWN in fuse blocks that unfortunately allow to accept BOTH - class CC or class G. Most fuse blocks don't, but some do. I'm not a fuse expert either, so don't know the rules on that.

    Anyway, class CC fuses have a smaller contact point on one end. If they're not properly installed, then there will be very poor electrical contact on the skinny end. Poor contact = heat generated under a load.

    Good Point Ecto!

    What's happened to the O.P.? Where's his additional Data?
    Hos 4:6 My people are destroyed for lack of knowledge. Because you have rejected knowledge, I will also reject you, that you may be no priest to me. Because you have forgotten your God’s law, I will also forget your children.


    "You've got to Stand for Something or You'll fall for anything" (A. Tippin)


    Mat_15:24 But he answered, “I wasn’t sent to anyone but the lost sheep of the house of Israel.”

  2. #67
    Join Date
    Nov 2006
    Location
    Southeastern Pa
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    30,271
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    Helllllllllooo.........
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist
    Member, IAEI

    AOP Forum Rules:







  3. #68
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    20,796
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    I hope hes not......................
    https://youtu.be/YYeWdukr3Ik

  4. #69
    Join Date
    Oct 2000
    Location
    Sacramento Area, CA
    Posts
    30
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    This is a real longshot, but reminds me of a real unusual situation I encountered many moons ago. I replaced a couple of water cooled chillers on a large department store. Both new chillers were identical. After start up, one of the chillers started intermittently tripping the breaker. Went through the chiller and couldn't find anything wrong, customers electrician checked the breaker and feed all the way back to the MCC and could not find the source of the problem. Customer got the utility involved and as it turns out there was a bad connection on one leg of the main transformer feeding the building, saw it with my own eyes. They fixed the connection and the problem went away. We were still scratching our heads wondering why the other equipment never tripped but we were happy the problem was solved.....

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  6. #70
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    30,271
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    I have diagnosed a couple of those High Resistance leg connections myself, but I don't think that that would apply in this particular situation.

    It's nice to know for those who've never seen it, though.
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist
    Member, IAEI

    AOP Forum Rules:







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