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Recommended checks before CU change

Former Community Member
Former Community Member
As most of you know I’ve only been qualified for just over a year and I’ve got a quote to do for a cu upgrade.


I know I’m nowhere experienced enough to do EICR’s yet, but what would you guys recommend I check/test before doing the cu upgrade and should I do these checks/tests at the quote stage?
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    I do carry out ring final continuity tests sometimes at sockets if it is easier, especially if the consumer unit is at the back of a kitchen unit or otherwise difficult to access and work on. Recently during an E.I.C.R. test I took off a socket to undertake tests and found it was a spur run. I then took off another socket and found that that was supplied by a spur from the ring, all old and original sockets it seemed. So I took off a third socket and found that that was on a spur as well. This was in a 50s/60s bungalow. It appeared that the ring ran in the loft and most of the sockets were run as spurs below the ring. I made a comment on the paperwork covering the situation.


    Z.
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  • 0
    I do carry out ring final continuity tests sometimes at sockets if it is easier, especially if the consumer unit is at the back of a kitchen unit or otherwise difficult to access and work on. Recently during an E.I.C.R. test I took off a socket to undertake tests and found it was a spur run. I then took off another socket and found that that was supplied by a spur from the ring, all old and original sockets it seemed. So I took off a third socket and found that that was on a spur as well. This was in a 50s/60s bungalow. It appeared that the ring ran in the loft and most of the sockets were run as spurs below the ring. I made a comment on the paperwork covering the situation.


    Z.
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