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Torque settings

Jam
Hi all,


Obviously, where available we use manufacturer's torque settings for connections. But where do they get them from?


I ask this not least because it's not always easy to obtain, at least in a timely fashion, but also because I appear to have conflicting instructions on some OEM'd equipment (comparing the original manufacturer with the wrapped supplier) or notably different settings when using the same lug onto a very similar terminal bar from a different supplier. It would also be helpful to be able to sense-check the answers for misplaced decimal points.


Jam
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    Call me old but back in the day every electrician knew just how much to tighten terminals, no torque wrench, it was down to practice, practice, practice.

    Engineers similarly were taught to feel the micrometer and not need to use the ratchet.

    Back in those days terminals were round, screws had slightly dommed ends and terminal quality, both in screw-threads size and metal composition was such that they did not screech as you were tightening them. Living is cheaper these days but quality is a race to the bottom.


    They don`t make things like they used to do (there again, they never did! ?)
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  • 0
    Call me old but back in the day every electrician knew just how much to tighten terminals, no torque wrench, it was down to practice, practice, practice.

    Engineers similarly were taught to feel the micrometer and not need to use the ratchet.

    Back in those days terminals were round, screws had slightly dommed ends and terminal quality, both in screw-threads size and metal composition was such that they did not screech as you were tightening them. Living is cheaper these days but quality is a race to the bottom.


    They don`t make things like they used to do (there again, they never did! ?)
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