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Discuss Cooker install - RCCB tripping in the Electrical Forum area at ElectrciansForums.co.uk.

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  1. DarrellA
    Offline

    DarrellA New EF Member

    Location:
    Yorkshire
    Morning all,

    I'm Having an issue with a cooker install and wonder if anyone can help.
    Every time the cooker is switched on there is a RCCB trip (Rated at 80a 30Ma). The circuit will take a supply but no load of any kind. I connected a DeWalt charger to the socket on the cooker plate (only drawing 0.85a) and it still trips. The rest of the ring main/lighting circuit has no issues and tests with no problems.

    Testing path -
    Tested appliances, all good.
    New cable run, thought it may be a neg earth fault due to a rogue screw/nail so replaced the cable again.
    Removed all other connections in the distribution board so only the cooker was connected, same problem.
    Swapped out the 40a breaker.
    Swapped out the cooker connection plate.
    All polarity & resistance checks out.

    Scratching my head here, any help would be appreciated.

    Thanks,
    D
     
    • Optimistic Optimistic x 1
  2. telectrix
    Offline

    telectrix Scouser and Proud of It Respected Member

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    N in wrong bar in CU ???
     
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  3. Pete999
    Online

    Pete999 Forum Mentor

    Location:
    Northampton
    Business Name:
    None
    When you say all Polarity and Resistance checks OK what where the IR readings? and was the cooker ON when you tested L to E and N to E, and at what voltage setting did you use on your MFT
     
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  4. Taylortwocities
    Offline

    Taylortwocities Electrician's Arms

    Location:
    Oxfordshire
    I guess this is a new circuit? If so, your solution has been posted by Telectrix above #2
     
  5. Murdoch
    Offline

    Murdoch Electrician's Arms

    Location:
    Woking
    So it's a new circuit and falls under part - have you consulted your CPS support line?
     
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  6. buzzlightyear
    Offline

    buzzlightyear still kicking sand, before pushing up daisies . Electrician's Arms

    Location:
    star command
    you have replaced the cable again .so did you not do ir on the circuit to see which leg was giving a fault .
     
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  7. essex
    Offline

    essex Forum Mentor

    Location:
    Wiltshire
    Sounds like a faulty RCCB.
     
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  8. Taylortwocities
    Offline

    Taylortwocities Electrician's Arms

    Location:
    Oxfordshire
    Sounds like a wrong connection.
     
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  9. buzzlightyear
    Offline

    buzzlightyear still kicking sand, before pushing up daisies . Electrician's Arms

    Location:
    star command
    Go on op you can have another go .they say third time lucky.stick another cable in .
     
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  10. Murdoch
    Offline

    Murdoch Electrician's Arms

    Location:
    Woking
    Not sure I agree with that ....
     
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  11. Taylortwocities
    Offline

    Taylortwocities Electrician's Arms

    Location:
    Oxfordshire
    Oh yes, lets change everything. RCCB, cable, cooker, isolation switch, etc:eek:
    Probably there will be the same result.

    What is needed is a change in the level of competence.
     
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  12. telectrix
    Offline

    telectrix Scouser and Proud of It Respected Member

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    could even be a N-E reversal in the cooker switch/socket.
     
  13. DPG
    Offline

    DPG Respected Member

    Location:
    S Yorkshire
    Post up your test results for us to have a look at.
    (stop sniggering Murdoch).
     
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  14. Marvo
    Offline

    Marvo Admin and gender confused Staff Member Admin

    Location:
    South Africa
    Disconnect the circuit, do the usual dead tests and post results.
     
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  15. essex
    Offline

    essex Forum Mentor

    Location:
    Wiltshire
    What evidence do you have to make you not agree?

    If the OP is to be taken of his word there is nothing left to be faulty.
     
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