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Re terminating ancient cables

Hi Folks, 


So I may have a job in the offing where I will need to temporally re terminate these 3 cables, the one on the right is only 1m long so I’ll just replace it. 


The other two are rising mains from the 1940’s each feeding 20 flats, I believe them to be armoured PILC’s though happy to be corrected, the lead is being used as the earth. 


Has anyone re terminated similar and are there any pitfalls that may scupper me? 


The re termination will only be temporary whilst the new building network is being installed.89f8b92115c4d5d4e672a2d7771fc855-huge-a8ae4b2d-f17a-4e4e-a594-4469fa0801a0.jpg



Cheers 


Martyn
Parents
  • The black box looks in good nick for 1940!  Can you get a pic of what is inside? - The "overbraided" earth suggests to me there maybe  no lead  after all - it may be waxed cotton, or some rubber derivative directly under the strands you can see - which in conjunction with the artful use of builders band, rather look like an addition to provide some  CPC functionality at a later date. Or maybe there is some lead, but what we would now call  Zs was a bit high.


    edit - your second post arrived as I posted this. The bigger photo changes it a little - perhaps the braid was original after all. It will need unpicking with very great care.


    I'd suggest you may want a back up plan for what if - even if it is a roll of swa on "sale or return" that hopefully stays in the van and gets returned, but maybe  gets run out of the landing window and back in again lower down the wall if the worst happens and it all suddenly crumbles before your eyes. (The DNO round here have been known to power a house up temporarily from a neigbouri's cut out using  a roll-end length of ABC across 2 front lawns before coming back for the next couple of days to dig a failed joint out.)

    They also carry tapes, sleeves and rubber 'wizard hats' to form 'site applied insulation' when changing cut outs and so forth. There are certainly techniques worth being ready for


    However, just in case it is not a mistake, for info, the 'how to do' for wavecon and other LV cables too, is illustrated in the UKPN jointer's handbook

    I suggest starting with UKPN jointers manual

     LV Jointing Manual Section 1&2 (big file, lots of pix.)

    LV Jointing Manual Section 3

    for your type of cable and many other situations.
Reply
  • The black box looks in good nick for 1940!  Can you get a pic of what is inside? - The "overbraided" earth suggests to me there maybe  no lead  after all - it may be waxed cotton, or some rubber derivative directly under the strands you can see - which in conjunction with the artful use of builders band, rather look like an addition to provide some  CPC functionality at a later date. Or maybe there is some lead, but what we would now call  Zs was a bit high.


    edit - your second post arrived as I posted this. The bigger photo changes it a little - perhaps the braid was original after all. It will need unpicking with very great care.


    I'd suggest you may want a back up plan for what if - even if it is a roll of swa on "sale or return" that hopefully stays in the van and gets returned, but maybe  gets run out of the landing window and back in again lower down the wall if the worst happens and it all suddenly crumbles before your eyes. (The DNO round here have been known to power a house up temporarily from a neigbouri's cut out using  a roll-end length of ABC across 2 front lawns before coming back for the next couple of days to dig a failed joint out.)

    They also carry tapes, sleeves and rubber 'wizard hats' to form 'site applied insulation' when changing cut outs and so forth. There are certainly techniques worth being ready for


    However, just in case it is not a mistake, for info, the 'how to do' for wavecon and other LV cables too, is illustrated in the UKPN jointer's handbook

    I suggest starting with UKPN jointers manual

     LV Jointing Manual Section 1&2 (big file, lots of pix.)

    LV Jointing Manual Section 3

    for your type of cable and many other situations.
Children
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