NAPIT Certification Scheme Consumer unit replacement issues

[Michael J]

Splitting the ring is all you can do in this circumstance.

I bet the customer doesn’t even allow you to move furniture to access sockets though.

Have you double checked your mates work? He hasn’t done something daft in the CU and got legs mixed up?
Possibility of faulty rcd? (Swap it for known good one) or is it an actual N-E fault. What was the IR result?

Thanks for the feedback.
Disconnected the ring in the CU and found a very low reading between N & E, causing enough imbalance to trip the RCD.
Original installation did not have RCD protection so the current flow wasn’t enough to trip the mcb.
I do not know what the original installer was thinking but the ring serves the entire house including underfloor heating.
I have suggested that when we can pinpoint the problem we disconnect that section and replace it with a surface mounted option. I suspect there could more than one fault, there have been a number of additions as when splitting the circuit both legs trip.
Hope this gives you an idea what is going on.

 

[7029 dave]

Hope the client agrees to the surface work, you have to make the client understand that cables cant just magically appear without some kind of disruption.
Too late but testing before teardown is the only way.

 

[Petej999]

He’s a close friend and was very supportive during my cancer treatment, I’m ok now though.

Your Mate, has he offered any help, Advice or offered to finish off whathe should have sorted in the first place, even though he was a help during your illness this should be passed back to him, tell your client to contact him, after all he is to blame. should have made sure all was OK prior to swapping the CU and issued an EIC on completion of the CU swap, thus negating the need for an EICR. IMO.

 

[Michael J]

Hope the client agrees to the surface work, you have to make the client understand that cables cant just magically appear without some kind of disruption.
Too late but testing before teardown is the only way.

Totally agree

 

[Michael J]

Your Mate, has he offered any help, Advice or offered to finish off whathe should have sorted in the first place, even though he was a help during your illness this should be passed back to him, tell your client to contact him, after all he is to blame. should have made sure all was OK prior to swapping the CU and issued an EIC on completion of the CU swap, thus negating the need for an EICR. IMO.

Yes he has taken full responsibility and is in contact with the client

 

[nicebutdim]

Seems like delicate negotiation with the client is the only way of resolving this.

 

[Michael J]

Seems like delicate negotiation with the client is the only way of resolving this.

Yes there is