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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
  • As far as The OFGEM book of words (P16)  are concerned the term implies eventual disconnection/removal  of the original cable

    Cable overlays This is an alternative expression for the replacement of an existing underground >cable with a new underground cable. The activity includes the installation of the new underground cable, the full decommissioning of the existing underground cable, any necessary underground cable jointing and any associated network operations


    To minimise disruption, there is a period when both old and new are live, and then customers are transferred across, usually live working. I'm sure there will be cases where the old cable gets left in, but this probably isn't one of them.

    More generally I think a lot of dicky 'Consac' cable from the 1970s is being overlaid, before the aluminium outer fails.
Reply
  • As far as The OFGEM book of words (P16)  are concerned the term implies eventual disconnection/removal  of the original cable

    Cable overlays This is an alternative expression for the replacement of an existing underground >cable with a new underground cable. The activity includes the installation of the new underground cable, the full decommissioning of the existing underground cable, any necessary underground cable jointing and any associated network operations


    To minimise disruption, there is a period when both old and new are live, and then customers are transferred across, usually live working. I'm sure there will be cases where the old cable gets left in, but this probably isn't one of them.

    More generally I think a lot of dicky 'Consac' cable from the 1970s is being overlaid, before the aluminium outer fails.
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