Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 3 replies
  • Subscribers 32 subscribers
  • Views 1444 views
  • Users 0 members are here
Options
You may also be interested in
This discussion is locked.
You cannot post a reply to this discussion. If you have a question start a new discussion

Earth Bonding Points - Use of 'Double Nutting' or 'Jam Nuts'

Toby Lewis
Hi,


We have earth bonding points on our electronic enclosures and the general opinion is that the use of 'double nutting' or a second locking nut on an earth bonding stud is considered good practice (even where a coil or shakeprook washer is provided).


Problem is no-one that I talk to can find any evidence for the practice of double nutting or a standard or 'good practice' guidelines to hang this on.


Can anyone on this forum provide any information about a standard or code of practice/guidelines that state this?


Many thanks,


TL
Parents
  • 0

    Toby Lewis:

    Hi,


    We have earth bonding points on our electronic enclosures and the general opinion is that the use of 'double nutting' or a second locking nut on an earth bonding stud is considered good practice (even where a coil or shakeprook washer is provided).


    Problem is no-one that I talk to can find any evidence for the practice of double nutting or a standard or 'good practice' guidelines to hang this on.


    Can anyone on this forum provide any information about a standard or code of practice/guidelines that state this?


    Many thanks,


    TL




    Double bolting, non-slip washers, self-locking nuts will all do the same job, do a degree. Low current appliations are less likely to suffer the effects of vibratioin unless the installation is near a generator,on a boat, automotive control, mobile  transmission vans, temporary installs

    BS7671 gives us 134.1.4 as an introduction with more advise at section 526.


    Legh

Reply
  • 0

    Toby Lewis:

    Hi,


    We have earth bonding points on our electronic enclosures and the general opinion is that the use of 'double nutting' or a second locking nut on an earth bonding stud is considered good practice (even where a coil or shakeprook washer is provided).


    Problem is no-one that I talk to can find any evidence for the practice of double nutting or a standard or 'good practice' guidelines to hang this on.


    Can anyone on this forum provide any information about a standard or code of practice/guidelines that state this?


    Many thanks,


    TL




    Double bolting, non-slip washers, self-locking nuts will all do the same job, do a degree. Low current appliations are less likely to suffer the effects of vibratioin unless the installation is near a generator,on a boat, automotive control, mobile  transmission vans, temporary installs

    BS7671 gives us 134.1.4 as an introduction with more advise at section 526.


    Legh

Children
No Data

Join us to get the best from IET EngX.

Joining EngX lets you personalise your experience so you stay up to date on the topics that interest you, plus you’ll be able to make connections who are looking to collaborate, exchange ideas and more.

Join us Not now

Community Rules & Guidelines