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Follow up question: quote for connection and local supply issue

Thanks for the fantastic replies I had to my previous question, helping me to understand the supply locally and enabling me to successfully push back on the quote/plan provided. 


I now have one further query.



WPD say that if they were upgrading the local network they would overlay the current 95mm wcon cable with a 185mm wcon cable, but that this alone would not be sufficient to allow for my property to be connected to the local network. Instead, they said that for me to be connected, a 300mm wcon cable needs to be laid, and they want me to fund the difference between the 185 cable and the 300 cable. 


As they were less than scrupulously transparent in their previous quote, I would like to check if anybody has any thoughts on the veracity of this? Why would upgrading to a 185mm cable not allow sufficient capacity to add my supply? Why would they not, if doing an upgrade and presumably incurring significant cost, simply upgrade to future proof the local supply with a 300mm2 cable?


I'm particularly concerned that what they have said about replacing the 95mm2 cable with a 185mm2 cable (that this would not be sufficient to connect me to the supply) is untrue.

Plan of existing supply.pdf
Updated plan for new supply.png
Parents
  • Former Community Member
    0 Former Community Member
    By replying Chris I'm not claiming to be more learned, but my understanding is that the term "overlay" is exactly that, they leave the existing in place and put another cable adjacent/over it.

    Normally as a complete replacement from the use of Aluminium sheathed cable (the term eludes me!) which has had severe corrosion issues from where the sheath has been damaged and allowed water ingress (any 4x4 owner of certain brand will know all too well the warts/scabs that form on the body panels!) and is replaced with wavecon cable with the copper strands (but Al cores).

    Not necessarily of a greater ccc (sorry Morgan, current carrying capacity) but replaced to maintain a healthy network with less risk of loss of neutral.


    Regards


    BOD
Reply
  • Former Community Member
    0 Former Community Member
    By replying Chris I'm not claiming to be more learned, but my understanding is that the term "overlay" is exactly that, they leave the existing in place and put another cable adjacent/over it.

    Normally as a complete replacement from the use of Aluminium sheathed cable (the term eludes me!) which has had severe corrosion issues from where the sheath has been damaged and allowed water ingress (any 4x4 owner of certain brand will know all too well the warts/scabs that form on the body panels!) and is replaced with wavecon cable with the copper strands (but Al cores).

    Not necessarily of a greater ccc (sorry Morgan, current carrying capacity) but replaced to maintain a healthy network with less risk of loss of neutral.


    Regards


    BOD
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