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 28 replies
  • Subscribers 27 subscribers
  • Views 2352 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

Terminating Twin and Earth

nicemark
I have been arguing about the methods of separating out the ends of twin and earth cable.


An old accepted trade method was to simply grip the earth wire and tear it out of the insulation to split the ends open.

However this puts considerable strain on the earth wire and in the case of 1mm wire it is very easy to stretch a significant amount. 


I was wondering if you there is data or evidence to demonstrate that this method is not acceptable. 

Parents
  • 0
    I don't think you will have a problem, a quick back of a fag packet calculation tells me to stretch a 10cm length of 1mm2 by 1mm you would need 12.6 MN force which you would need a hefty machine to do that.  Furthermore, the force you apply to strip is not true tensile as your curling it as you strip therefore adding a sheer force too, so between tensile and sheer you will be perfectly OK.

    If you can stretch a length of 1mm2 copper wire with your hands you're a very strong lad!
Reply
  • 0
    I don't think you will have a problem, a quick back of a fag packet calculation tells me to stretch a 10cm length of 1mm2 by 1mm you would need 12.6 MN force which you would need a hefty machine to do that.  Furthermore, the force you apply to strip is not true tensile as your curling it as you strip therefore adding a sheer force too, so between tensile and sheer you will be perfectly OK.

    If you can stretch a length of 1mm2 copper wire with your hands you're a very strong lad!
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