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  1. 7671
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    7671 EF Member

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    Testing my extensions wiring today and noticed cpc fails continuity. Howevery I have continuity from outward leg to main earthing bar in CU

    Any ideas how ?
     
  2. Vortigern
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    Vortigern Electrician's Arms

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    Mixed up the wires?
     
  3. 7671
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    7671 EF Member

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    I did remove a couple of other cables of similar size to see if that was the case but ran out of time, will try again tomorrow. Wasn't overly bothered as all other tests were fine
     
  4. Vortigern
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    Vortigern Electrician's Arms

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    Ok, maybe new day and feeling brighter might answer your question.
     
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  5. Murdoch
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    Murdoch Electrician's Arms

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    Woking
    Interesting comment.

    So if this is new wiring in your extension you are testing, and you did the install, then fault finding it should be very easy..... how many sockets etc on the circuit?
     
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  6. Pete999
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    Pete999 Trusted Advisor

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    Is this a twin and cpc installation? have you managed to identify the individual cables? if yes then it's probably a loose or missing connection at one of the sockets, or a bad connection during testing.
    What were the r1 and rn readings, how many sockets are involved ? sorry if these questions have been asked before.
     
  7. FatAlan
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    FatAlan Trainee Trainee Access

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    Surrey
    If you did end to end on the CPC and failed to get continuity and then get continuity on one half doesn’t that answer your question?
     
  8. Pete999
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    Did you do your testing like this?
     
  9. Midwest
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    Midwest Electrician's Arms

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    Oxfordshire
    Continuity test of RFC conductors, is one I breath a huge sigh of relief when I get suitable results.

    You need to go round and test each accessory, and find out where the failed termination is.
     
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  10. kingeri
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    kingeri Trusted Advisor

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    Nice of him to get back on and let us know how he did!
     
  11. Pete999
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    Pete999 Trusted Advisor

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    Agree and some thanks for the help, not holding my breath though.
     
  12. 7671
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    7671 EF Member

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    Easy girls been busy, resolved by trying all the other CPC's on the board. I knew it was there as i said before as i was getting continuity between CPC and board
     
  13. Murdoch
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    Murdoch Electrician's Arms

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    Woking
    ^^

    I still don't understand. End to end continuity tests are the first to do on a new or a modified ring circuit.

    Surely you know which are the correct ends?
     
  14. Pete999
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    Pete999 Trusted Advisor

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    A
    You would have thought so.
     
  15. 7671
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    7671 EF Member

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    Ah, must have miss led you some what, I didn't complete the wiring in my extension just testing after adding a couple of points in the kitchen.
     
  16. Pete999
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    Pete999 Trusted Advisor

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    Ahhhh
     
  17. Murdoch
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    Murdoch Electrician's Arms

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    Woking
    I'm guessing you didn't test the continuity before you started ...
     
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  18. ipf
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    ipf Trusted Advisor

    Seems you're not the only one to get his wires crossed, eh?

    but....if you knew it was there, why did you ask?
     
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