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  • Maintence-free joint twixt 2.5 t&e and 3-core flexible cable

    From Andrew@21:1/5 to All on Sun Feb 9 17:03:00 2025
    I have a double socket in the inside of the front wall of my
    1976 house next to the BT master socket.

    I added the power socket and it is a spur from the ring main
    in the bedroom above but because I later applied 80mm of celotex
    to the inside of this wall (50 all over and taped+30 infilled
    between the battens surface fitted on the 50mm sheets with
    frame anchors), it is fed from a fused spur with a 10A fuse
    so that I don't have to downgrade the whole ring. The spur
    2.5 cable is inside oval conduit clipped to the original wall
    so it is buried under 80mm of PIR.

    From the window cill down I have used up some unused B&Q 18mm t&g
    vertically cladded from skirting up to cill. There is only the
    50mm of celotex behind this and gap of about 20mm between it and
    the cladding.

    The socket backbox is fixed to the original wall inside a cutout
    in the celotex with a topless and bottomless box of 15mm fermacell
    around it.

    I have glued 4 of the 18mm t&g strips into a single panel that holds
    the BT master socket, the double socket and a spare backbox for CAT5/6.
    This section can thus be removed or hinged forward after a little bit
    of unscrewing which involves disconnecting the power socket.

    What I want to do is joint the 2.5 t&e to a flying lead of 3-core immersion-type cable which is connected to the socket to avoid having
    to do this. This requires a joint between solid-core flat twin and
    3-core stranded so a wago is obvious, but I only want one !.

    I have a ratchet crimp so I could do it that way but I am not sure if
    the usual blue/red/yellow crimps are intended for this. Anyone know ?

    Andrew

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  • From Theo@21:1/5 to Andrew on Sun Feb 9 18:25:45 2025
    Andrew <Andrew97d@btinternet.com> wrote:
    What I want to do is joint the 2.5 t&e to a flying lead of 3-core immersion-type cable which is connected to the socket to avoid having
    to do this. This requires a joint between solid-core flat twin and
    3-core stranded so a wago is obvious, but I only want one !.

    I have a ratchet crimp so I could do it that way but I am not sure if
    the usual blue/red/yellow crimps are intended for this. Anyone know ?

    I very much doubt those crimps are rated for 250Vac.

    For a '3 in 1' wago-style connector there's: https://www.toolstation.com/in-line-spring-lever-connectors/p78346

    but it's a no-brand without a spec and not clear about whether they're ok
    for stranded cable. I've used them for lighting but I perhaps wouldn't
    trust them on a socket circuit where you could be pulling chunky currents.

    Wago make inline connectors: https://www.wago.com/gb/electrical-interconnections/discover-installation-terminal-blocks-and-connectors/221/221-inline-splicing-connector
    but it seems they really want you to buy 3 connectors where one would do. However 3 inlines would get you a properly specced connection that I'd trust for pulling the rated current through.

    Theo

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Andrew@21:1/5 to Theo on Sun Feb 9 18:37:14 2025
    On 09/02/2025 18:25, Theo wrote:
    Andrew <Andrew97d@btinternet.com> wrote:
    What I want to do is joint the 2.5 t&e to a flying lead of 3-core
    immersion-type cable which is connected to the socket to avoid having
    to do this. This requires a joint between solid-core flat twin and
    3-core stranded so a wago is obvious, but I only want one !.

    I have a ratchet crimp so I could do it that way but I am not sure if
    the usual blue/red/yellow crimps are intended for this. Anyone know ?

    I very much doubt those crimps are rated for 250Vac.

    For a '3 in 1' wago-style connector there's: https://www.toolstation.com/in-line-spring-lever-connectors/p78346

    but it's a no-brand without a spec and not clear about whether they're ok
    for stranded cable. I've used them for lighting but I perhaps wouldn't
    trust them on a socket circuit where you could be pulling chunky currents.

    Wago make inline connectors: https://www.wago.com/gb/electrical-interconnections/discover-installation-terminal-blocks-and-connectors/221/221-inline-splicing-connector
    but it seems they really want you to buy 3 connectors where one would do. However 3 inlines would get you a properly specced connection that I'd trust for pulling the rated current through.

    Theo

    Yes three of those clipped onto the integrated strain relief
    would be perfect. Trouble is that's all I want and there will
    be a minimum order of a lot more.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Andy Burns@21:1/5 to Andrew on Sun Feb 9 21:29:19 2025
    Andrew wrote:

    I have a ratchet crimp so I could do it that way but I am not sure if
    the usual blue/red/yellow crimps are intended for this. Anyone know ?

    The crimps are fine, but they ought to be within an enclosure with
    strain relief on the cable/flex.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Theo@21:1/5 to Andrew on Sun Feb 9 21:15:36 2025
    Andrew <Andrew97d@btinternet.com> wrote:
    Yes three of those clipped onto the integrated strain relief
    would be perfect. Trouble is that's all I want and there will
    be a minimum order of a lot more.

    ebay is your friend:
    https://www.ebay.co.uk/itm/405377418039

    Pack of 5, £2.99 including delivery.
    (other sellers cost more for 3 or 4)

    There's also a mounting carrier for keeping them in position: https://www.ebay.co.uk/itm/285913598609

    Theo

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