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Discuss Is a borrowed earth allowed? in the Electrical Forum area at ElectrciansForums.co.uk.

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  1. a-z electrics
    Offline

    a-z electrics Regular EF Member

    Location:
    Exeter area
    Business Name:
    A-Z Electrics
    Done an EICR yday on an old house and all ok apart from 2 issues..
    1) 32A cooker circuit had high resistance pec continuity (over2kohms) ALTHO it did buzz out on my voltage probes. Hence not able to get a Zs reading and no rcd tripping. The dual rcd consumer unit was fitted 10 yrs ago and those test readings all available and fine. Kitchen was refitted 3 yrs ago and no docs available so they extended original cooker cable prob from the switch which is now tiled over somewhere.
    .. I've put in an earth wire link from an immediately adjacent rfc socket into the cooker switch and this solves this problem.
    Question .. is this ok as a permanent solution if i label up what ive done?
    2) lowish IR readings 1.75M L-E and N-E on light circuits and one rfc but possibly in hindsight due to some bulbs, fan and appliances still plugged in. Could this account for it?
     
  2. buzzlightyear
    Offline

    buzzlightyear please let me back in to the prison cell.

    Location:
    star command
    no this the answer rewire the circuit in full if possible .borrowing a earth from some where else .it will cause problems down the line if was a main fault .
     
    • Agree Agree x 1
  3. Pete999
    Offline

    Pete999 Forum Mentor

    Location:
    Northampton
    Business Name:
    None
    Totaly agree with BL
     
  4. Midwest
    Offline

    Midwest Electrician's Arms

    Location:
    Oxfordshire
    I'd say;
    1) No, as each circuit must have its own cpc, as I recall.
    2) Further investigation required

    I don't do EICR's, but I recall you report, but not carry out the remedial work?
     
    • Agree Agree x 2
  5. freddo
    Offline

    freddo Regular EF Member

    Location:
    Devon
    1 I wouldn't do it.

    2 Could be anything, light bulbs shouldn't be causing L/N - E insulation faults!

    Edit: Wow I was way too slow.
     
  6. a-z electrics
    Offline

    a-z electrics Regular EF Member

    Location:
    Exeter area
    Business Name:
    A-Z Electrics
    How do you mean "a main fault"?
     
  7. buzzlightyear
    Offline

    buzzlightyear please let me back in to the prison cell.

    Location:
    star command
    bang.
     
  8. a-z electrics
    Offline

    a-z electrics Regular EF Member

    Location:
    Exeter area
    Business Name:
    A-Z Electrics
    I do if it removes immediate danger! Client not on site..
     
  9. buzzlightyear
    Offline

    buzzlightyear please let me back in to the prison cell.

    Location:
    star command
    try and explain to the HSE.
     
  10. westward10
    Offline

    westward10 In echoed steps I walk across an empty dream. Staff Member Moderator

    Location:
    Northamptonshire
    Anyone want to quote a Regulation where this is not permitted providing the borrowed cpc is adequate for fault protection requirements.
     
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  11. Midwest
    Offline

    Midwest Electrician's Arms

    Location:
    Oxfordshire
    I'd just isolated the circuit, with clients permission of course.

    You've not really done a permanent repair, and now your liable, should anything go wrong. If it was young family or someone frail, then as a temporary fix ok.
     
    • Agree Agree x 1
  12. Midwest
    Offline

    Midwest Electrician's Arms

    Location:
    Oxfordshire
    No. I'll have a look. Might be some time.
     
  13. Pete999
    Offline

    Pete999 Forum Mentor

    Location:
    Northampton
    Business Name:
    None
    Not right now Westy, but go ahead fill yer boots
     
  14. westward10
    Offline

    westward10 In echoed steps I walk across an empty dream. Staff Member Moderator

    Location:
    Northamptonshire
    What I am saying is that he has done nothing wrong, it is permitted provided it is adequate for a cpc to serve more than one circuit. What he has done may seem unorthodox but I was asking for those who disagree with his actions to back it up with a Regulation.
     
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    • Agree Agree x 4
  15. Leesparkykent
    Offline

    Leesparkykent Super Moderator Staff Member Super Moderator

    Location:
    Kent
    There is no regulation that prohibits this.....What you’ve done is acceptable.
     
    • Agree Agree x 10
    • Like Like x 1
    • Optimistic Optimistic x 1
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