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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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    dcbwhaley:

    Whilst cutting the seal may be an offence it would be almost impossible to identify the perp.   "A bloke I met in the pub did it for cash.  He was called Dave" :-)


    But the person the DNO is supplying is the householder, and that is the person who gets the rude letter and threat of disconnection, or rather more serious if they suspect an attempt to abstract - it is the sort of thing they actually do talk to the meter reading companies about.

    Its the same as if you employ a builder to do something to your house that does not meet planning permission or building regs. The council prosecute  the house owner, not the builder...

    That said, most cases the cut out has not been fiddled and it just gets re-sealed. I think very few will work with live tails these days. The nearest I have seen is the live insertion of a single pole Henley block as a means of expedient isolation.

    Mike.


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  • 0
    dcbwhaley:

    Whilst cutting the seal may be an offence it would be almost impossible to identify the perp.   "A bloke I met in the pub did it for cash.  He was called Dave" :-)


    But the person the DNO is supplying is the householder, and that is the person who gets the rude letter and threat of disconnection, or rather more serious if they suspect an attempt to abstract - it is the sort of thing they actually do talk to the meter reading companies about.

    Its the same as if you employ a builder to do something to your house that does not meet planning permission or building regs. The council prosecute  the house owner, not the builder...

    That said, most cases the cut out has not been fiddled and it just gets re-sealed. I think very few will work with live tails these days. The nearest I have seen is the live insertion of a single pole Henley block as a means of expedient isolation.

    Mike.


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