Extending an electrical lighting cable in porch

Discussion in 'Electrics UK' started by dazzler9000, 28 Apr 2021.

  1. dazzler9000

    dazzler9000

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    I need to extend some 1.5mm twin and earth.

    The cable is under my porch so shouldn't get wet and will be inside some mini trunking. Can you please tell me the best way of doing this? Ideally, the join needs to be as small as possible so fits inside the trunking.

    I've seen these Wago connectors - https://www.tlc-direct.co.uk/Products/WA413.html

    Would these be suitable for outdoor/under a concrete roof, inside trunking? I could always wrap them in tape as a precaution.

    Thanks
     
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  3. Sureitsoff?

    Sureitsoff?

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    crimp and heatshrink would be slim enough for mini trunking
     
  4. dazzler9000

    dazzler9000

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  5. Taylortwocities

    Taylortwocities

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    Better to use the red crimps. The earth wire in 1.5mm cable is only 1mm, and the blue crimps are too big for that.
    https://www.screwfix.com/p/insulated-red-0-5-1-5mm-crimp-butt-100-pack/94616
    If you use those crimps you will need to buy a special Ratchet crimp tool.
    https://www.screwfix.com/p/ratchet-crimping-tool-1-0-10mm/96561

    Easier to use these connectors. https://www.screwfix.com/p/ideal-32a-2-way-push-wire-connector-100-pack/72727
    Stagger the joins so they arent all in the same place in the trunking.
     
    Last edited: 29 Apr 2021
  6. dazzler9000

    dazzler9000

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    Thanks, seems I have some options then. I think I may be favouring the butt connectors as they should be slimmer and I can also shrink-wrap as a precaution.

    I just need to confirm...... I've always thought of those butt connections as being the used for speaker wires etc. Can these be used for mains electrics?
     
  7. Taylortwocities

    Taylortwocities

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    Those insulated butt crimps are really meant for stranded cable. T&E Have solid conductors. They should not be confused with the weedy auto crimps that use an equally weedy hand crimp.

    really, the push connector won’t take up any more space and sleeving wouldn’t be needed, if I’m they are in mini trunking as you have described. Think you are making a large hill out of a molehill.
     
  8. Sureitsoff?

    Sureitsoff?

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  9. dazzler9000

    dazzler9000

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    Yes, I do have a habit of doing that :D. I will go for the push connection option.

    Thanks again for your input both of you.
     
    Last edited: 29 Apr 2021
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  11. aptsys

    aptsys

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    Nonsense

    upload_2021-4-29_11-16-18.png
     
  12. EFLImpudence

    EFLImpudence

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    I don't think that is indisputable confirmation.
     
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  13. crystal ball

    crystal ball

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    Seen too many solid cores working loose in crimps to distrust them
     
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  14. bernardgreen

    bernardgreen

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    The crimp onto single solid conductors has to be made with the correct crimp tool if the joint is to be reliable. If there is any void in the joint then over time the copper will change shape and migrate into the void(s). The pressure of the tube onto the copper will be reduced and the joint will begin to fail.

    Good crimp ............. bad joint
    good bad crimp.jpg
     
  15. winston1

    winston1

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    In my opinion the best way is to solder the extension and cover with self amalgamating tape.
     
  16. bernardgreen

    bernardgreen

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    You really need to give more detailed information about how to perform this jointing process.
     
  17. winston1

    winston1

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    You mean you are an electrician and don't know how to solder?
     
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