SCA fuses

Discussion in 'Australia' started by JohnG., Jul 22, 2013.

  1. JohnG.

    JohnG. Long timer

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    SCA fuses,their quality varies...

    [​IMG]
    #1
  2. gavo

    gavo Slacker

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    Had this problem also.Melted the fuse holder as well.:eek1
    #2
  3. PBee

    PBee .

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    Everything I see in that photo is wrong, did the fuse do all of that?
    #3
  4. crash n bern

    crash n bern Long timer

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    Well put.
    #4
  5. dnrobertson

    dnrobertson Big Bike, Slow Rider

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    For the purpose of education, could you detail what is wrong in the photo?
    #5
  6. Andy_P

    Andy_P Been here awhile

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    I would say that its not a fuse issue, but rather a design issue. The fuse is designed to blow when it gets over a certain current. If it sits just under that, it gets hot, but not quite hot enough to melt the fuse material.

    You will also see the same issue when the contacts in the fuse holder are dirty/corroded or the contacts are underrated. Possibly a combination of the 2.
    #6
  7. Warin

    Warin Retired

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    Electrical tape

    Possibly wire colour

    Solder joint without strain relief

    ==============
    The problem for that fuse holder is poor contact, that combined with current produces heat that has melted the thing.
    If you want to avoid this - check the contact pressure - is it hard or easy to insert the fuse? Does it get warm/hot - feel by hand with what ever it powers 'on'.
    #7
  8. slowbike smallpenis

    slowbike smallpenis Tester of Tooheys Old

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    Any rating noted on the fuse base and carrier?
    #8
  9. wisejangrae

    wisejangrae Been here awhile

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    + 1
    #9
  10. PBee

    PBee .

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    + 1 wire looks like it melted the insulation & is insulated with black tape.

    I'd rip it all apart & start again. Top of the list after that would be to measure the current draw.
    #10
  11. klx_dude

    klx_dude Been here awhile

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    Use heat shrink instead of insulation tape. Alot neater and easier to get a nice clean look that will last longer

    Sent from my GT-I9300T using Tapatalk 2
    #11
  12. muncher850

    muncher850 Adventurer

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    had the same problem , burnt out fuse block , cheap chinese fuses not blowing at the rated specifcations , checked the packet of fuses all blade fuses seem to have the same size wire (guage ) for different amperage , threw them out and bought Brand name , no problems since
    #12
  13. Andy_P

    Andy_P Been here awhile

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    scientific observation?

    Not saying they are all good, but often the differences are subtle.

    I have seen the damage in the photo many times, with high quality fuses. I just wonder what that fuse is for, because 9 times out of 10 you see that in headlight wiring.
    #13
  14. sidecarcrazy

    sidecarcrazy grandad in gladstone

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    Is that grey tape "metallised duct tape" ?
    Seen plenty of builders use it on building sites and the tape can become 'LIVE'
    You should use 'insulation tape'

    my 2 cents worth
    #14
  15. itsgunnahurt

    itsgunnahurt Gravity Enhanced!

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    Did you follow the correct application chart?
    [​IMG]
    #15