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Orange Alu Split Con

Martyn
Hi All, 


As per the title I need a 25m ish length of 25mm Orange Alu split con, cant seem to get it from the cable suppliers unless I order to be manufactured with crazy minimum order quantities.


Cant use standard Split con as it’s PVC and I need LSF for an escape route, cable forming part of a BNO replacing a degraded cotton service.


It’s only manufactured in 25 & 35mm apparently, could use either but prefer 25mm.


Anyone with a short length?


Cheers


Martyn
  • 0
    I can't help I'm afraid - but may I ask?


    Why Ali? (rather than Cu)


    Why Split-con? (rather than LSF SWA for instance)


    Why orange? (references to BS 1710 I think were dropped from BS 7671 years ago).


    I'm sure there are good reasons - I'm just curious!


      - Andy.
  • Former Community Member
    0 Former Community Member
    I'm not aware of my DNO using anything other than Al 3 core 95 mm2  "orange" for LSF services to their equipment "indoors". I've yet to see small single phase in use by the DNO. It is not liked due to its difficulty in use (bending, stripping, terminating).


    Regards


    BOD
  • 0

    AJJewsbury:

    I can't help I'm afraid - but may I ask?


    Why Ali? (rather than Cu)


    Why Split-con? (rather than LSF SWA for instance)


    Why orange? (references to BS 1710 I think were dropped from BS 7671 years ago).


    I'm sure there are good reasons - I'm just curious!


      - Andy.




     

    Cheers Andy, 


    As far as I can see LSF Split con is only available in orange with Ali line & copper N&E, a DNO spec cable I believe. 


    As you know SWA is quite a bit larger and part of the route likely needs to go through an existing conduit plus terminating SWA at the flat end in to Henley head or the like is a chore and needs greater bending radius etc.


    looking at redoing the whole BNO from cotton services so this might have to wait until I can get the meterage up to MOQ levels. 


    Martyn
  • 0

    perspicacious:

    I'm not aware of my DNO using anything other than Al 3 core 95 mm2  "orange" for LSF services to their equipment "indoors". I've yet to see small single phase in use by the DNO. It is not liked due to its difficulty in use (bending, stripping, terminating).


    Regards


    BOD




    I cant say that I have seen it in use domestically, sadly this BNO is in an escape route for its entirety, couldn't tell you if existing mods are LSF or not, painted multiple times etc. 


    Limited options really;


    1, Orange split con

    2, LSF SWA

    3, Re run the singles in existing conduits but they are just open ended conduits in the flats so  would need to find a compliant means of termination, maybe the head physically over the end on the conduit.


    Dont fancy pulling cables in to existing conduits with other cotton supplies...


    Cheers 


    Martyn

     

  • 0
    Split Con. is very common in new build blocks of flats for the BNO network. The orange outer sheath is LSF. Split con. supplying the Ryfields up the riser and split con. laterals to Series 8 heads with the link removed from the neutral and earth blocks. The split con. can be terminated directly in to the head unlike SWA.


    If someone can explain how to insert a photo in to a post I will find a photo of a BNO network using split con. and post it?
  • 0
    But requires a separate earth conductor?


    Andy Betteridge
  • 0
    Andy


    Split con. has separate earth and neutral conductors which is why it is used in BNO networks instead of CNE Wavecons.

  • 0
    So split the TNCS-PME connection at the Ryefield to TNS without the link being fitted in the head at flat.


    So the actual supply at the flat is TNS, but with all the characteristics of TNCS-PME. 


    Presumably the suppliers meter is then installed at the flat rather than by the Ryefield?


    Andy Betteridge
  • 0
    Andy


    That is what happens. The split con. is easier to terminate in the cut out than an SWA.


    The supply, although the neutral and earth are separate in the BNO network to comply with BS 7671, remains TN-C-S (PME).
  • 0
    I am actually trying to clear some of the stuff out of my garage,  this might as well go in the recycling!

    365f3190ae64bee95f27e9121ec70202-huge-20190915_140924.jpg

    Andy Betteridge

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