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Discuss OK to T consumer unit for garage off existing SWA to workshop? in the Electrical Wiring, Theories and Regulations area at ElectrciansForums.co.uk.

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  1. Msitekkie
    Offline

    Msitekkie Active EF Member

    Location:
    Essex
    I currently have a 10mm T&E SWA cable (which passes through my garage) serving a small CU in my workshop at the bottom of my garden (200ft). The garage is currently connected to a FCU on the downstairs ring, but I would like to T off the SWA and add another consumer unit in the garage.

    First and foremost I would like to confirm this is an acceptable thing to do in principle.

    No doubt some of you will be interested in additional parameters, so to flesh things out a bit:
    The SWA is connected to a 40A MCB and 30 mA RCD in a small CU that has been fitted in the meter box (independent of the main house CU). (I appreciate I will need to consider the overall load/diversity for the property.)
    The workshop has a 6A lighting circuit and a 20A Radial. I am proposing to fit the same in the garage.
    Oh I should mention that when the CU was fitted in the workshop an Earth Rod was added outside.

    Any guidance/thoughts appreciated as long as someone answers the primary question first.
     
  2. Murdoch
    Offline

    Murdoch Electrician's Arms

    Location:
    Woking
    Is there any "slack" in the SWA where it passes the garage?
     
    • Like Like x 1
  3. davesparks
    Offline

    davesparks Forum Mentor

    Location:
    guildford
    In principle there is nothing wrong with a submain which feeds two points.
    Your post isn’t too clear as to whether it is SWA or T&E as you mention both?
     
  4. davesparks
    Offline

    davesparks Forum Mentor

    Location:
    guildford
    No slack needed for a breech/Y joint
     
  5. Msitekkie
    Offline

    Msitekkie Active EF Member

    Location:
    Essex
    Thanks everyone. I should have said 3 core, but got the answer I needed. :)
     
  6. Pete999
    Online

    Pete999 Forum Mentor

    Location:
    Northampton
    Business Name:
    None
    I take it that you understand from the description of the intallation, that consumption of Electricity is restricted to 13 Amps, as you have taken the feed to the Shed from a fused spur from the downstairs RFC.
     
  7. Richard Burns
    Offline

    Richard Burns Respected Member

    Location:
    Cambridgeshire
    Business Name:
    Richard Burns
    I think the existing garage feed is off the FCU, the existing garden shed feed that is to be intercepted is three core SWA on a 40A MCB with a 30mA RCD.
     
  8. Pete999
    Online

    Pete999 Forum Mentor

    Location:
    Northampton
    Business Name:
    None
    Ah yes Rich you are right I missed that, sorry OP, message Pete999 read the bluudy post properly.
     
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