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Upgrading supply to rural property

Grumpy
I'm in the process of buying a rural property and I would really appreciate some advice on how to arrange the supplies to the various buildings.

Currently the main property has a standard single phase TNCS domestic supply. It's overhead to the boundary and then the current owner trenched it.

There is a stone outbuilding some 20m away with PV on the roof and a submain back to the house. It looks like 16mm armoured and I don't know how it's connected in the house yet.

Going forward I would like to convert the outbuilding into a 2 bed dwelling. Additionally some 10m from the main house are two former workers' cottages in some disrepair that have planning for a three bed cottage. Finally, I would like to build a small workshop about 40m from the main house.

Heating will be oil and wood. So my thinking is that the outbuilding and main house would be OK together on the existing supply rating and the cottages and workshop wouldn't need more than 60A supply each.

 So how would you go about this? For example, there is a small outhouse, I could ask for a new 3p supply to this outhouse and then run 1p sub mains to the various buildings.

Is that plausible?

Thanks for any help.

G

  • 0
    Is the proposal for three dwellings in total, including the existing ?

    If so then I would ask for a new three phase 100 amp supply, one phase per dwelling, and three phase to the workshop.

    If four dwellings are proposed in total, then that needs careful consideration to avoid overloading the phase that serves two dwellings.

    A 100 amp three phase supply should allow for 2 or 3 7Kw EV chargers or a single 22KW EV charger.


    With a three phase supply, you can add another two PV arrays, since the limit is general y back feeding per phase, not per customer.


    Make certain that 3 phase is available ! Presuming that 11Kv lines are overhead do they two wires or three. If only two wires then you cant get three phase without paying for a network upgrade.
  • 0
    Or if there's any thoughts of these new dwellings being sold off separately in future, it might be simpler to just obtain a separate DNO supply for each.

       - Andy.
  • 0
    Thanks Broadgage, that's something I hadn't thought of. I've just Googled some archive pictures that fortuitously showed the overheads and, thankfully, there are three!


    Thanks Andy. I won't be selling anything off in my time, too big a family! Also, I did wonder if I had a separate supply to the cottages whether they would become, in effect, a second home and then liable to CGT when selling.
  • 0
    3 ph supply in a rural area? Have you no experience Broadgauge? It presumably has a pole Tx. some distance away. 3 phases may be miles away. 100A supply x 3? You must be joking as the supply reinforcements would bankrupt you. Perhaps I am slightly cynical through experience.
  • 0
    Ah Grumpy.

    Each new property you make, if sold separately is subject to CGT. It is only your own main residence which is exempt. Another house and immediate liability is gained. Sorry!
  • 0
    But if it was sold as a total, what then David?

  • 0
    I have an idea, which you may find useful. By the sound of it you will just have to pay for a new TX to get 3 phase supplies, perhaps £10k. If you make all the buildings into just one house, but easily split, you could pass the liabilities to a new owner later. You can easily make it so that there are 3 DBs in a small extension to 3 submains to 3 "areas" in the properties. A door between each area and it is one dwelling. One lot of rates, etc. Just keep it simple. Make any detached buildings into "sheds" which have no occupants and you are safe.
  • 0
    Might it be a good idea to have a conversation with the DNO now?

    This recent thread discussed a supply upgrade at £14k.
  • 0
    Chris Pearson:

    Might it be a good idea to have a conversation with the DNO now?

    This recent thread discussed a supply upgrade at £14k.


    I'll do that when I'm in. If it's not possible or too expensive I'll just have to cut my cloth!

    Thanks for the respones.

    G

     


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