Boarded loft room power

Discussion in 'Electricians' Talk' started by Jamez, Feb 22, 2021 at 2:38 PM.

  1. Jamez

    Jamez New Member

    hi all,
    A mate of mine wants to put some power and lights into his loft. I thought the best way to do this was use the (redundant), immersion heater spur (15amp), and maybe replace the fused switch with a small garage consumer unit and run sockets and lights out of this. Would that work?
    Cheers and here's hoping I don't get too slated.
    James.
     
    Last edited: Feb 22, 2021 at 2:43 PM
  2. Teki

    Teki Screwfix Select

    If it is an old style 15A wired fuse rather than a breaker, then yes you could install a small garage CU which would also provide RCD protection. Make sure the MCBs are rated below 15A. B10 and B6 for sockets and lighting respectively.
     
  3. Jamez

    Jamez New Member

    Perfect. thanks for that.
     
  4. Nomenklatura

    Nomenklatura Active Member

    Not essential.

    Selectivity is only required when there are safety concerns.
     
    Jamez likes this.
  5. Jamez

    Jamez New Member

    is that because of the RCD?
     
  6. Banallsheds

    Banallsheds Well-Known Member

    A CU seems unnecessary to me. Lights can be run off the existing upstairs lighting circuit taking a feed from one of the ceiling roses. The old 15 amp immersion supply can feed 13 amp sockets directly as a radial.
     
  7. JoeN007

    JoeN007 New Member

    For the lighting you could use this brilliant solution for the wiring? you can use this to loop off the existing lighting circuit
    Quickwire.co.uk
     
  8. BillyBobToo

    BillyBobToo Member

    Amazingly, I have to agree in part!
    A switched fused spur could be used as a light switch off the radial.
    It does still leave the issue of rcd protection hanging though. In essence it is a new circuit.
     
  9. Jamez

    Jamez New Member

    thanks all. i put in a little CU today for him. it's a slow project - and he's very very slow! Cheers all
     
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  10. Jamez

    Jamez New Member

    the thing is, the lighting circuit is a old as the house and there is not earth on that loop. he don't wanna rewire the lot. what can one do?!
     
  11. Nomenklatura

    Nomenklatura Active Member

    No it was because of the comment on the sizes of the MCBs.
     
  12. Banallsheds

    Banallsheds Well-Known Member

    So you didn't take any notice of the advice that it was unnecessary. Why do you come on here for advice if you ignore it?
     
  13. Nomenklatura

    Nomenklatura Active Member

    Maybe what he did was to take no notice of advice which didn't take account of the lack of an RCD on the old circuits and no earth on the lighting one.
     
  14. Banallsheds

    Banallsheds Well-Known Member

    He never actually said there was no RCD. But anyway he could use a stand alone RCD, no need for a CU.
     

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