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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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  • Former Community Member
    0 Former Community Member
    Hi , it is a lot easier to do at a socket and perfectly acceptable.


    On an old installation like the one in the picture you will generally find that the existing old sockets are on a ring.


    Just be careful of additions where spurs are taken from spurs , in this case you could either rectify at further cost or drop mcb to 20a.


    Also with no Rcds present and sensitive gadgets removed you could possibly carry out IR for the whole board at the same socket as your ring continuity test.


    I think we can only do so much before a board change and as long as the installation is not dangerous then just get on with it.


    You may have a few slightly low IR readings but not dangerously low , the installation will be a lot safer than what is was.


    Someone else will do it regardless.


    Regards
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  • Former Community Member
    0 Former Community Member
    Hi , it is a lot easier to do at a socket and perfectly acceptable.


    On an old installation like the one in the picture you will generally find that the existing old sockets are on a ring.


    Just be careful of additions where spurs are taken from spurs , in this case you could either rectify at further cost or drop mcb to 20a.


    Also with no Rcds present and sensitive gadgets removed you could possibly carry out IR for the whole board at the same socket as your ring continuity test.


    I think we can only do so much before a board change and as long as the installation is not dangerous then just get on with it.


    You may have a few slightly low IR readings but not dangerously low , the installation will be a lot safer than what is was.


    Someone else will do it regardless.


    Regards
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