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Ring Main at Consumer unit

Former Community Member over 4 years ago

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 Former Community Member over 4 years ago

Sparkingchip:
dcbwhaley‍ The OP is conspicuous by his absence, I trust all is well.

Thank you for your concern. OP is well and following the discussion with interest.

I visited the installation yesterday and corrected the other C1s.

I took some very bad photographs. This one is an overview. You will see that the base of the CU is only ab out an inch above the bottom of the cupboard in which it lives. This necessitates a sharp bend in the tails which must have put a strain on the grommet which popped out when the meter was changed. My main concern is that with the grommet pulled out of the hole the tails might be on the point of pulling out of the terminals in the CU. Because of that I am very reluctant to risk taking the cover off the CU

Two other things from this photo: where the tails leave the meter the sheath has been stripped back leaving the insulation on view: (definate C2.); and there is no seal on the DNO fuse

This is an attempt to show the situation where the tails entere the CU. Not very helpful.

I have advised my daughter to get a proper electrician to move the CU up by about three inches and refit the grommet and ensure that the tails are secure.

Then I will be confident to do other remedial work such as fitting properly rated MCBs
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0 Former Community Member over 4 years ago

Sparkingchip:
dcbwhaley‍ The OP is conspicuous by his absence, I trust all is well.

Thank you for your concern. OP is well and following the discussion with interest.

I visited the installation yesterday and corrected the other C1s.

I took some very bad photographs. This one is an overview. You will see that the base of the CU is only ab out an inch above the bottom of the cupboard in which it lives. This necessitates a sharp bend in the tails which must have put a strain on the grommet which popped out when the meter was changed. My main concern is that with the grommet pulled out of the hole the tails might be on the point of pulling out of the terminals in the CU. Because of that I am very reluctant to risk taking the cover off the CU

Two other things from this photo: where the tails leave the meter the sheath has been stripped back leaving the insulation on view: (definate C2.); and there is no seal on the DNO fuse

This is an attempt to show the situation where the tails entere the CU. Not very helpful.

I have advised my daughter to get a proper electrician to move the CU up by about three inches and refit the grommet and ensure that the tails are secure.

Then I will be confident to do other remedial work such as fitting properly rated MCBs
Cancel
Vote Up 0 Vote Down

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Ring Main at Consumer unit

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