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Ring joined up to a Radial

Former Community Member
Former Community Member
Hi all, first post here so please be nice :-)


I am having my house rewired and have taken it all back to brick with the exception of the kitchen which I can not afford to renovate yet but will be in the next couple of years.  The kitchen is on ring circuit in 2.5mm.  I have asked for the whole house to be rewired in radials, with each room on its own circuit, however do not want to mess with the kitchen until I am ready to renovate it in a few years but would like the kitchen to be on a radial.  My electrician has advised that he run a 4mm cable to the kitchen through the ceilings etc and join it to the 2.5mm ring already in place and put it on a 32amp breaker.  This doesn't sound conventional and frankly i am not sure if what he is doing is right.  Any advice please before I raise my concerns with him.  In the future I can then join onto the 4mm cable and turn the kitchen into a radial on a 32amp breaker wired in 4mm cable.


If there is nothing wrong with what he is doing, then for my own peace of mind how should the 4mm cable be connected to the 2.5mm ring.  Can a direct connection be made in a junction box or does it need to be connected via a fused connection unit.


I know he is an electrician but he is young and I assume new to it and therefore I just need to be sure for my own sanity that what he is doing is right.
  • 0
    if you have:


    [32A MCB] <---- 4mm cable ---->  [junction box] <=== both ends of 2.5mm ring ==


    then that's perfectly, safe, legal and normal(ish).
  • 0
    What is your concern? 

    It is known as a Lasso circuit. Also a lollipop circuit.

    you seem to not like rings for some reason.

    what he is doing sounds fine
  • 0
    If the 2.5mm forms a continuous ring, with no more than one double socket (or equivalent ) on any unfused side spur fed by single 2.5mm cable, then it will be fine on the 32A breaker, so will the 4mm.

    Like centre fed radials and multi-branch "Christmas tree" radials, this is not one of the 'textbook' layouts of the On-site Guide, but that does not make it a bad thing, and it is quite common, especially supplying outbuildings,  and in converted kitchens, and as above is colloquially called a 'lasso' or 'lollipop'.

    The junction box just needs to be accessible for periodic inspection if it has screw terminals. (and I do not mean 'accessible with a hammer and chisel only' )

    Mike.
  • Former Community Member
    0 Former Community Member
    Thank you all.  Appreciate the responses.
  • 0
    mapj1:

    The junction box just needs to be accessible for periodic inspection if it has screw terminals. (and I do not mean 'accessible with a hammer and chisel only' )


    The proposal seems to me to be v. sensible forward planning.


    Now then, Mike, I agree if it is let's say behind some kitchen cupboards or buried within a wall, but what about a hammer and bolster to lift a floorboard?


    (In this instance, I'd use a Wagobox with lever connectors.)


  • 0
    The electrician has done what you asked him to do, now you are questioning if it’s correct?


    If it were incorrect who would be at fault as it is your design? ?
  • 0
    It needs the big red Wago connectors not the lever connectors, if you are using Wago.
  • 0
    ebee:

    What is your concern? 

    It is known as a Lasso circuit. Also a lollipop circuit.

    you seem to not like rings for some reason.

    what he is doing sounds fine




    Lasso as in ? ?


    I don’t like this circuit arrangement, but that possibly a personal preference and long term the ring is going to be replaced, so don’t worry about it.


  • 0
    Sparkingchip:

    It needs the big red Wago connectors not the lever connectors, if you are using Wago.


    ? Wago do 6mm2 221 lever connectors rated at 41A. Also the standard 4mm2 221 lever connectors are rated to 32A unless they're derated for e.g. a MF setting.


  • 0
    wallywombat:
    Sparkingchip:

    It needs the big red Wago connectors not the lever connectors, if you are using Wago.


    ? Wago do 6mm2 221 lever connectors rated at 41A. Also the standard 4mm2 221 lever connectors are rated to 32A unless they're derated for e.g. a MF setting.






    Oh! The joys of working with Wago connectors.


    I stood on the Wago Box stand at the Coventry Elex show discussing Wago connectors and maintenance free connections, the ratings you see on the connectors, the cardboard boxes the connectors are delivered in and specification sheets vary.

    91e181d641153e397dd5b8159969f94f-original-5571cd78-1f2e-4bda-874c-397972fcd827.jpg


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