The IET is carrying out some important updates between 17-30 April and all of our websites will be view only. For more information, read this Announcement

Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 37 replies
  • Subscribers 31 subscribers
  • Views 3173 views
  • Users 0 members are here
Options
You may also be interested in
This discussion is locked.
You cannot post a reply to this discussion. If you have a question start a new discussion

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

Morgan Phillips
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
  • 0
    I suggest you enquire how much a new cable from the sub to your house explicitly (3ph 100A) would cost. It looks to be 50 or 60m and this should cost quite a lot less than the quote. I got a 200A one to a building by WPD a couple of years back and this was across roads and pavements and about 150m, for about that price. This cable seems to run under a field or something where there are already the existing ones, and the trenching etc should be quite cheap. You could also ask if a HV overhead to your property and a pole TX would cost less, it would only be two new poles I think if the incoming HV is aerial which I expect. Does the workshop need 3 phase, for anything much it is well worthwhile as 3 phase machines are much cheaper on the 2nd user market! There are a number of ways available...
Reply
  • 0
    I suggest you enquire how much a new cable from the sub to your house explicitly (3ph 100A) would cost. It looks to be 50 or 60m and this should cost quite a lot less than the quote. I got a 200A one to a building by WPD a couple of years back and this was across roads and pavements and about 150m, for about that price. This cable seems to run under a field or something where there are already the existing ones, and the trenching etc should be quite cheap. You could also ask if a HV overhead to your property and a pole TX would cost less, it would only be two new poles I think if the incoming HV is aerial which I expect. Does the workshop need 3 phase, for anything much it is well worthwhile as 3 phase machines are much cheaper on the 2nd user market! There are a number of ways available...
Children
No Data

Join us to get the best from IET EngX.

Joining EngX lets you personalise your experience so you stay up to date on the topics that interest you, plus you’ll be able to make connections who are looking to collaborate, exchange ideas and more.

Join us Not now

Community Rules & Guidelines