Discuss Broken "earth" in the UK Electrical Forum area at ElectriciansForums.net

D

Deleted member 112675

Firstly, I deliberately use terms like earth instead of cpc and ring main instead of ring final circuit etc to make it clear if its not already that I am not a spark.

So doing some plastering in the kitchen and removed a single socket adjacent to an FCU for another socket below. I haven't absolutely tested this yet but I'm fairly sure the earth in the ring is broken at that point. THe ring coming in goes straight to the socket and whilst N and L are connected onwards in the ring the earth is not.

It was done a long time ago (1980s probably). Still seems like poor workmanship to me but is it dangerous if every socket on the ring neverthless has access to an earth assuming there is only one such break. Would it be enough to fail a landlord check?

Whether or not, and even though its so old, it still strikes me a shoddy and lazy workmanship, very easy to fix and the customer at the time would not have known and not have cared until a comparison test of kettles started a fire under a joist....
 
Yes any open ring conductor is a fault that has to be fixed.

But if it is just one break in the CPC then all sockets still have some form of earth.

However, a ring final circuit can be large enough that the looped (unbroken) CPC is needed to allow a low enough resistance so that fast enough disconnection on a fault by the supply 32A MCB (or maybe a 30A fuse) is possible to be safe.
 

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