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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
  • I'm tending to agree with DZ. The only trouble with a C3 is that the installation is deemed "satisfactory" and I haven't met any home owners who have asked me to fix a "requires improvement". I think we all agree that this one definitely requires improvement as although it isn't a problem right now it has the capacity to become one in the future. So, what we need is another code where it's not dangerous but needs fixing before the installation can be considered "satisfactory". Oh,'ang on . . . .
Reply
  • I'm tending to agree with DZ. The only trouble with a C3 is that the installation is deemed "satisfactory" and I haven't met any home owners who have asked me to fix a "requires improvement". I think we all agree that this one definitely requires improvement as although it isn't a problem right now it has the capacity to become one in the future. So, what we need is another code where it's not dangerous but needs fixing before the installation can be considered "satisfactory". Oh,'ang on . . . .
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