Posting a message to the forum will remove the above advertisement

Discuss Metallic pipe with push fittings in the Electrical Wiring, Theories and Regulations area at ElectrciansForums.co.uk.

Please make sure you checkout our forum sponsors, many do discounts for members and, they keep the forum free to use.
  1. Virtualcom13at
    Offline

    Virtualcom13at Guest

    If a metallic pipe work has push fit type fittings that dont provide electrical continuity what should be done

    A=Leave it as it is
    B=Increase the pipe size
    C=Bridge with a brown bonding conductor
    D=Bridge with a G/Y bonding conductor

    I was thinking A ?
    Thanks

    Last one then i can get my self in the workshop and try to put into practise what i have learnt in the past two months of studying.
    just one step closer to never picking up a paint brush again.
     
  2. wirepuller
    Offline

    wirepuller Trusted Advisor

    Location:
    south uk
    There is insufficient information given to provide an answer.
     
  3. JUD
    Offline

    JUD Electrician's Arms

    Location:
    East Yorkshire
    I'd go with D
     
  4. Virtualcom13at
    Offline

    Virtualcom13at Guest

    Thats word for word what the TMA question reads.

    I did wonder what material the push fittings where made from but as it says dont provide electrical continuity i guessed the fitting must be of plastic.
    I dont no maybe im talking rubbish.
     
  5. Virtualcom13at
    Offline

    Virtualcom13at Guest

    That was my second guess as if the matallic pipe did need bonding then at least its done by answer D.
     
    Last edited by a moderator: Jun 23, 2011
  6. Paul.M
    Offline

    Paul.M Trusted Advisor

    Location:
    Lost in Space
    I'd agree with Jud as well. The reason being is that any fault current finding the water pipes would not be carried away (and therefore not tripping the mcb/fuse/rcd) and not finding earth (MET) at the cu hence the need to bridge the plastic push fit. An experiment was carried out in a Chris Kitcher testing book. He had two short pieces of copper pipe with a push fit connecting them, filled the pipe with water and put 230V on one end and tested the other end. Results showed only 3mA (0.003A) was conducted through the water. Just so you know why we bridge plastic push fittings. Any more questions, I can answer these whilst Telectrix is on another thread :)
     
    • Like Like x 2
    Last edited: Jun 23, 2011
  7. telectrix
    Offline

    telectrix Scouser and Proud of It Trusted Advisor

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    have to agree with jud and paul m on what the answer would be, but wirepuller is correct as the question does not stipulate whether or not the pipework is extraneous. so the question as it stands is unanswerable.
     
  8. i=p/u
    Offline

    i=p/u Trusted Advisor

    id kick a fuss in the shop and say i wanted metal ones;)
     
  9. Virtualcom13at
    Offline

    Virtualcom13at Guest

    Cheers guys
    Glad i found this forum
     
  10. Virtualcom13at
    Offline

    Virtualcom13at Guest

    Thats plumbers going for the easy option. he he
     
  11. telectrix
    Offline

    telectrix Scouser and Proud of It Trusted Advisor

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    you won't be after a few weeks :gunsmilie:
     
  12. IQ Electrical
    Offline

    IQ Electrical Trusted Advisor

    Unless the pipe is being used AS the bonding conductor, why would you wish to assist the distribution of fault voltages onto sections of pipework which because of the high resistance of water are, in effect, isolated sections?Wirepuller is right, the question as it stands can't be answered but I'll bet Mr Kitcher isn't advocating linking across push joints on pipework that isn't being used as the actual bonding conductor.
     
    • Like Like x 1
  13. Paul.M
    Offline

    Paul.M Trusted Advisor

    Location:
    Lost in Space
    I'm afraid Mr Kitcher does and has a nice photo in his book of him doing it. It's things like this that confuse people. I know there's a few mistakes in his books but these are what people use to pass tricky exams.
     
  14. Virtualcom13at
    Offline

    Virtualcom13at Guest

    Who is this mr Kitcher he sounds like a man who knows. whats his book called??? as im going to be studying this possibly for the next two years and then working and learning for the rest of my working life i might as well get more books to add to my collection.
     
  15. IQ Electrical
    Offline

    IQ Electrical Trusted Advisor

    I remember seeing the picture but again, I'm certain that this will be where the pipe IS the bonding conductor, check it out if you can Paul, I'll not be able to see the book until Monday.
     
Loading...
Similar Threads - Metallic pipe push Forum Date
Hilmor pipe bender, said I'd post a pic when I painted it so...... Electrical Tools and Products Jun 26, 2017
Hilmor pipe bender it's mine all mine! Electricians Chat - Off Topic Chat Jun 21, 2017
Bonding to plastic pipes.No gas to dwellings Electrical Wiring, Theories and Regulations Jun 18, 2017
Crimped copper pipe filled with grease from a stepdown transformer Industrial Electrician Talk Nov 2, 2016
Lined Pipe Carriers Electrical Forum Oct 6, 2016
Heating pipe and Swa cable Central Heating Systems Oct 3, 2016

Share This Page

  • Electricians Directory Post a Domestic Job Post a Commercial Job