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Discuss What to do with high n-n continuity readings in the Electrical Forum area at ElectrciansForums.co.uk.

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  1. Jamie'
    Offline

    Jamie' Regular EF Member

    Location:
    Essex
    Hi guys,

    I'm currently in my last year of my apprenticeship and I think my boss has set me a challenge! I was at a house and got moved a few things around in the kitchen for a new kitchen to be fitted and also upgraded the fuse board so it had RCD protection.

    Now on one of the rings (ground floor ring) the reading on l-l and e-e was fine but on n-n the reading was 62ish. And then when trying to do insulation resistance it was just giving a dead short. So I checked all the sockets and all was fine there but the house seems a total mess with junction boxes every where as most sockets only had 1 cable at it.
    Now what I'm wondering is this down to me to find the fault and fix as I'm the one who has changed the fuse board? Or if I've read reg 632.4 correctly it means it's not down to me?
    Just wondering if anyone has any ideas on what I could do?
    Hope this makes sense!
     
  2. westward10
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    westward10 In echoed steps I walk across an empty dream. Electrician's Arms

    Location:
    Northamptonshire
    I take it no pre board change tests were carried out, big mistake. What is "62ish".
     
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  3. Jamie'
    Offline

    Jamie' Regular EF Member

    Location:
    Essex
    No idea to be honest what would these be? Along the lines of an EICR?

    By 62 ish I mean 62 ohms seeing a as I'm doing continuity?
     
  4. Dannyg8810
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    Dannyg8810 Electrician's Arms

    Location:
    Leeds
    Inspect and testing so much of the installation you deem appropriate before removing anything or altering circuits to prevent the situation your in now.
     
    • Agree Agree x 1
  5. Jamie'
    Offline

    Jamie' Regular EF Member

    Location:
    Essex
    So test it say no thanks and walk away from the job?
     
  6. Wilko
    Online

    Wilko Electrician's Arms

    Location:
    Berkshire
    Business Name:
    Wilko Electrics
    My view is the circuit has a fault on it and so you can't just put it back into service. Detective time !
    I do test before, but I also tell the Customer that faults found during work will be fixed but they are extra.
     
  7. Jamie'
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    Jamie' Regular EF Member

    Location:
    Essex
    The customer isn't willing for any carpet or damage to be done though.
     
  8. Pete999
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    Pete999 Trusted Advisor

    Top Poster Of Month

    Location:
    Northampton
    Business Name:
    None
    What he said^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     
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  9. Dannyg8810
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    Dannyg8810 Electrician's Arms

    Location:
    Leeds
    It's sensible to test anything before working o
    no advise the customer that there is an issue and explain time to find fault is chargeable
     
  10. westward10
    Offline

    westward10 In echoed steps I walk across an empty dream. Electrician's Arms

    Location:
    Northamptonshire
    If some pre tests were carried out you would have discovered if this was an existing issue or one you have caused. Does your boss know the situation at this site.
     
  11. Jamie'
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    Jamie' Regular EF Member

    Location:
    Essex
    So pre tests should have been carried out.
    Now to the question I asked have I read that reg 632.4 correctly and best way to find and repair it?
     
  12. Pete999
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    Pete999 Trusted Advisor

    Top Poster Of Month

    Location:
    Northampton
    Business Name:
    None
    Should have been tested during the CU change as has been stated a couple of times, how many ishes was r1 and r2 also what was the result in ishes when you did the figure of 8 test on the RFC
     
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  13. Wilko
    Online

    Wilko Electrician's Arms

    Location:
    Berkshire
    Business Name:
    Wilko Electrics
    If I could encourage you - first find the fault then work out how to fix it. In an hour you will (hopefully) narrow it down to "between these 2 outlets" or some such. Then comes the question of how to resolve.
     
    Last edited: Oct 10, 2017
  14. Jamie'
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    Jamie' Regular EF Member

    Location:
    Essex
    If your going to be like that I don't even want your help mate. No need to be a... to someone asking for help and guidance.
     
  15. Jamie'
    Offline

    Jamie' Regular EF Member

    Location:
    Essex
    Cheers Wilko, and the reg part of my query am I right on that?
     
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