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Ring Main at Consumer unit

Former Community Member
Former Community Member
My daughter has just had an electrical safety check done and I suspect that the electrician has been over zeleous..

Would anyone care to comment.


There is no grommet where the meter tails enter the consumer unit and the outer insulation stops just short of the knockout.

He has graded this C1.   Now my opinion is that that does not present an  an immediate threat to the safety of personell

It needs fixing but surely only a C2?


More intriguing.  He gives a C3 to the ring circuit because the two legs enter the consumer unit through separate knock outs.  I can't find that in the regs


And finally an old chestnut which has been discussed before.   A C3 because two radial "circuits" are served by a single breaker..  I have always argued that the definition of a circuit is that it is served by a single breaker.  Certainly if both radials were brought to a junction box outside the CU and then connected to the breaker by a single cable it would meet the definition of a radial..


Thanks for your attention

Parents
  • 0
    You can conduct an in-service inspection of fixed wiring, with Report, to BS7671, or

    - Clients' requirements permitting - to your own standard.


    I suppose this alternative could be as simple as a simple dead count of bodies or incidence of fire, though you may run into a little difficulty in a Crematorium or Graveyard. You could get a waver; get them to sign something before they snuff it.


    My little picture again. Actually, this is the one of the better bits of this Industrial:

    27c5a32235fbd07f02c0ac7dbcccab98-original-dz-says-its-a-good-un.jpg

















    The cable management is earthed, sort of; more just by chance. The vast majority of the circuits never had a separate CPC, due to age of some of it.

    The suspended ceiling is mostly isolated metal work; mostly due to the unearthed light fittings.

    As I said, this is the good bit. You do not want to see the really bad bits.

    But there are no dead bodies. I did ask.

    There was an EICR on this Industrial 6 years ago.

    Resounding Satisfactory, no observations. They could have at least said "no evidence of dead bodies, its a good un". Gave age of installation as 8 years.

    It is not credible that things have changed in six years, but of course you will have difficulty in proving a negative.

    It was a "BS7671 EICR", but the Inspector obviously applied their somewhat questionable "bang test engineering judgement". 

    Is this a good thing?


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  • 0
    You can conduct an in-service inspection of fixed wiring, with Report, to BS7671, or

    - Clients' requirements permitting - to your own standard.


    I suppose this alternative could be as simple as a simple dead count of bodies or incidence of fire, though you may run into a little difficulty in a Crematorium or Graveyard. You could get a waver; get them to sign something before they snuff it.


    My little picture again. Actually, this is the one of the better bits of this Industrial:

    27c5a32235fbd07f02c0ac7dbcccab98-original-dz-says-its-a-good-un.jpg

















    The cable management is earthed, sort of; more just by chance. The vast majority of the circuits never had a separate CPC, due to age of some of it.

    The suspended ceiling is mostly isolated metal work; mostly due to the unearthed light fittings.

    As I said, this is the good bit. You do not want to see the really bad bits.

    But there are no dead bodies. I did ask.

    There was an EICR on this Industrial 6 years ago.

    Resounding Satisfactory, no observations. They could have at least said "no evidence of dead bodies, its a good un". Gave age of installation as 8 years.

    It is not credible that things have changed in six years, but of course you will have difficulty in proving a negative.

    It was a "BS7671 EICR", but the Inspector obviously applied their somewhat questionable "bang test engineering judgement". 

    Is this a good thing?


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