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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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    Fitzy71:

    Thanks guys


    the homeowners said the house was built in the early 70's, they do however have loads of class I light fittings.


    If there is NO cpc for the lighting circuits, I can't reconnect them to the new cu, especially if they refuse to replace all the class I with class II fittings, so what do you do in that scenario?


    But considering they've had new lights fitted previously, especially the loft and 2 small lights at each side of the master bed, I'm guess there IS a lighting cpc present.....




    Perhaps unwise to guess or assume anything. A lady asked me to look at her lighting cct that was blowing fuses. Upon inspection i told her it had no cpc. She said i know, last year i had a metal chandelier installed, and the electrician who fitted it said there was no earth wire but not to worry because the light is on the ceiling so you're not likely to be touching it anyway. Hmm.


    On a different note, reading through the replies, there's a difference of opinion about the depth of testing to do. While all seem to follow the same sequence of continuity of protective conductors, ring cct continuity, IR testing, etc, some favour the depth of initial verification testing, others use periodic I&T methods.


    F

Reply
  • 0

    Fitzy71:

    Thanks guys


    the homeowners said the house was built in the early 70's, they do however have loads of class I light fittings.


    If there is NO cpc for the lighting circuits, I can't reconnect them to the new cu, especially if they refuse to replace all the class I with class II fittings, so what do you do in that scenario?


    But considering they've had new lights fitted previously, especially the loft and 2 small lights at each side of the master bed, I'm guess there IS a lighting cpc present.....




    Perhaps unwise to guess or assume anything. A lady asked me to look at her lighting cct that was blowing fuses. Upon inspection i told her it had no cpc. She said i know, last year i had a metal chandelier installed, and the electrician who fitted it said there was no earth wire but not to worry because the light is on the ceiling so you're not likely to be touching it anyway. Hmm.


    On a different note, reading through the replies, there's a difference of opinion about the depth of testing to do. While all seem to follow the same sequence of continuity of protective conductors, ring cct continuity, IR testing, etc, some favour the depth of initial verification testing, others use periodic I&T methods.


    F

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