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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
  • Andy, I did not say it is compliant, just not dangerous. The basis for coding is only the level of danger, not specific regulation compliance. This is exactly the problem with many EICRs, any deviation is coded to be as high as possible, for whatever reason. C3 is "requires improvement" as I am sure you realise, this requires improvement and yet is not dangerous in any way unless damage is caused which could equally happen to any exposed sheathed wiring. The details are the degree of risk that this is likely (no) and the relative lengths for damage, this very small, other wiring probably very large. This is a subtle case of degree, and therefore I do not see it as a C2. If there were yards of singles everywhere I would have a difference of degree and therefore a C2, but in the same way with a PAT, a lamp with 2 core unsheathed flex, I would not condemn it, just suggest improvement. In case you had not noticed, there are still many of these still about, and even some being sold new, particularly twisted cotton-covered conductors, which is NOT a sheath. You may wish to differ, but it is the opinion of the Inspector which he should be prepared to justify, which I think I have in a fair and reasonable way, just as I would in Court. You may make a counterargument, but need to say WHY the risk is higher than I have suggested, preferably with a previous case where this defect in the same length was proved dangerous.
Reply
  • Andy, I did not say it is compliant, just not dangerous. The basis for coding is only the level of danger, not specific regulation compliance. This is exactly the problem with many EICRs, any deviation is coded to be as high as possible, for whatever reason. C3 is "requires improvement" as I am sure you realise, this requires improvement and yet is not dangerous in any way unless damage is caused which could equally happen to any exposed sheathed wiring. The details are the degree of risk that this is likely (no) and the relative lengths for damage, this very small, other wiring probably very large. This is a subtle case of degree, and therefore I do not see it as a C2. If there were yards of singles everywhere I would have a difference of degree and therefore a C2, but in the same way with a PAT, a lamp with 2 core unsheathed flex, I would not condemn it, just suggest improvement. In case you had not noticed, there are still many of these still about, and even some being sold new, particularly twisted cotton-covered conductors, which is NOT a sheath. You may wish to differ, but it is the opinion of the Inspector which he should be prepared to justify, which I think I have in a fair and reasonable way, just as I would in Court. You may make a counterargument, but need to say WHY the risk is higher than I have suggested, preferably with a previous case where this defect in the same length was proved dangerous.
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