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Help wanted to read/understand an electrical supply plan from DNO - updated new query

EDIT: I 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?




Original question (already answered):Can anybody assist me in understanding what an existing plan provided by my DNO is showing, and what this means for my request for a new supply please? I've had a very large quote to connect our new house (a passive house) to the network, and am not certain that it is quite right. It appears to be asking us to upgrade the local supply from a 95mm2 cable to a 300mm2 cable, and I am being asked to pay 70% of the cost of that. I was told that if this isn't done, the lights would go out for the rest of the street. I'm not an electrical engineer, so am looking for knowledge with which to go back and discuss the quote. Thanks!



Plan of existing supply.pdf


Plan of proposed new supply.pdf
Parents
  • Welcome OBW to the forum.


    Difficult to say without knowing more detail.  It is looking like the existing supply to houses in the adjacent street has no spare capacity on the cable for your new house.


    It looks like to provide you with a supply the DNO will need to upgrade the supply to the nearby street in order that they can provide you with a supply. The DNOs are money making businesses so they want you to pay a big chunk of their costs.


    These pay be what are called contested works so you may be able to use an approved contractor to do the cabling with the final connection by the DNO which may be a cheaper option. 


    IF you shout out the magic word "BOD" he may appear. WPD is his part of the world and he is used to dealing with supply issues like yours.
Reply
  • Welcome OBW to the forum.


    Difficult to say without knowing more detail.  It is looking like the existing supply to houses in the adjacent street has no spare capacity on the cable for your new house.


    It looks like to provide you with a supply the DNO will need to upgrade the supply to the nearby street in order that they can provide you with a supply. The DNOs are money making businesses so they want you to pay a big chunk of their costs.


    These pay be what are called contested works so you may be able to use an approved contractor to do the cabling with the final connection by the DNO which may be a cheaper option. 


    IF you shout out the magic word "BOD" he may appear. WPD is his part of the world and he is used to dealing with supply issues like yours.
Children
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