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Where to find neutral at lights

Discussion in 'Electrics UK' started by RobTi, 10 Apr 2021.

  1. RobTi

    RobTi

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    hi so no neutrals at my switches and years ago electrician changed from pendants to recessed downlighting. So where would you look for the neutrals, should they be at the old junctions of the pendants ?
    Thanks
     
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  3. Harry Bloomfield

    Harry Bloomfield

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  4. 333rocky333

    333rocky333

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    I would say if it was done properly, there should not really be any inaccessible joints where the old pendant was, easy to do maintenance free joints have not been around that long, so it is possible there is a joint there, but its likely non compliant.
    If you want just a Neutral there will be one at each downlight obviously, if you can locate the first downlight on the circuit, you may locate the supply neutrals origin
     
  5. RobTi

    RobTi

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    This is on top floor flat so have access to the attic and junction boxes at the old central light fitting. Can I ask can I just go for the easiest light fitting and pick up a neutral from there ?
     
  6. AndyPRK

    AndyPRK

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    If it’s the same room should be ok.
     
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  8. RobTi

    RobTi

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    Thanks will need to get the son up for a visit soon
     
  9. Harry Bloomfield

    Harry Bloomfield

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    However it absolutely MUST be a neutral from the very same lighting circuit, otherwise it will be known as 'a borrowed neutral'. Such will then cause an RCD or RCBO to trip.
     
  10. 333rocky333

    333rocky333

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    An Attic changes things then, i was assuming the wires would be under the floor, he may have pulled the old pendant wires into the loft, but unfortunately many dont and bodge onto the old ceiling rose below which sometimes then gets boarded over, with a lower false ceiling.

    If the downlights are visible in the loft then obviously its not boarded over, but be prepared to possibly find a lashup where the old pendant was.
    As you say you need to look above in the loft
    .
    I do not see no reason why you cannot take the Neutral from any downlight, though the cable will need to be insulated and sheathed as well as contain an Earth, I do not recall any reg preventing you using normal 1 or 1.5 T+E and just not using the Brown core
     
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  11. RobTi

    RobTi

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    Will be off the same circuit I asked in another thread about borrowing a neutral and then found out my lights are split in two between two breakers in the cu
     
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