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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

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  • 0
    The CU appears to be relatively new because the test button notice is to the 18th Edn. (And it is still shiny) The date of inspection (and date of next one) have not been filled in. Perhaps there was no initial verification? The meter may have been replaced a little earlier in Jan 2018 - I cannot quite make out the text of the little label above it.


    Ideally, those consumer's tails need to be replaced (because of the exposed insulation) but if not, they could be put into an isolator or Henley blocks. They could then be extended easily.


    Are the cables properly secured where they exit the board? They may come out of the back, but if the top, I doubt that they are IP4X.
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  • 0
    The CU appears to be relatively new because the test button notice is to the 18th Edn. (And it is still shiny) The date of inspection (and date of next one) have not been filled in. Perhaps there was no initial verification? The meter may have been replaced a little earlier in Jan 2018 - I cannot quite make out the text of the little label above it.


    Ideally, those consumer's tails need to be replaced (because of the exposed insulation) but if not, they could be put into an isolator or Henley blocks. They could then be extended easily.


    Are the cables properly secured where they exit the board? They may come out of the back, but if the top, I doubt that they are IP4X.
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