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Incorrectly sized lugs on busbars

Mark Whittingham
Hi,

What are your thoughts on installing 300/16mm Lugs on 300mm singles connecting to 12mm holes on a busbar. We have found this today inside a newly installed transformer and in my opinion its not good practice at all. The lugs should really match the hole size and bolt size?
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  • Former Community Member
    0 Former Community Member
    Whilst 300 mm2 lugs may not be an off the shelf item in some wholesalers, I wouldn't have thought the Tx was either and that too needed to be ordered. I wonder why they were not ordered.


    As to the "correctness" of the lug size compared to bus-bar hole size, I would have thought an enquiry to the Tx manufacturer for their advice would carry some weight.


    You do not mention crimp tool compatibility with the make of lugs, crimp tool calibration, torque setting of the bolts used, use of PVC tape over the lug........................


    Regards


    BOD
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  • Former Community Member
    0 Former Community Member
    Whilst 300 mm2 lugs may not be an off the shelf item in some wholesalers, I wouldn't have thought the Tx was either and that too needed to be ordered. I wonder why they were not ordered.


    As to the "correctness" of the lug size compared to bus-bar hole size, I would have thought an enquiry to the Tx manufacturer for their advice would carry some weight.


    You do not mention crimp tool compatibility with the make of lugs, crimp tool calibration, torque setting of the bolts used, use of PVC tape over the lug........................


    Regards


    BOD
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