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3-phase to new build shed or annexe first?
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<blockquote data-quote="steve.gmarsh" data-source="post: 557562" data-attributes="member: 35248"><p>We have recently got planning permission for an Annexe and a steel framed shed. They are about 25m apart. The shed will be put up this autumn n and the annexe next spring. We can't put PVs on the annexe due to overshading, so they will be put on the shed with the inverter and batteries. The annexe will be all electric with ASHP. To futureproof the development, I am thinking 3-phase which will also allow a larger solar array without having to ask permission and reasonably fast EV charging when we get our first EV. </p><p></p><p>Is there any reason why I can't put the meters in the shed and get National Grid to take the 3-plase power directly to the shed this autumn? This way the shed can be connected this autumn and I won't need to install a temporary supply.</p><p>The annexe will then be attached via an underground conduit which will be installed as part of the build process for the annexe.</p><p></p><p>What size supply should I ask National Grid for? (PS the shed will never have a huge demand as power only required for lighting and occasional 3kw for tools.)</p><p></p><p>Will National Grid want to charge me more as it is not initially domestic ?</p><p></p><p>Any other thoughts would be appreciated.</p><p></p><p>Thanks in advance</p></blockquote><p></p>
[QUOTE="steve.gmarsh, post: 557562, member: 35248"] We have recently got planning permission for an Annexe and a steel framed shed. They are about 25m apart. The shed will be put up this autumn n and the annexe next spring. We can't put PVs on the annexe due to overshading, so they will be put on the shed with the inverter and batteries. The annexe will be all electric with ASHP. To futureproof the development, I am thinking 3-phase which will also allow a larger solar array without having to ask permission and reasonably fast EV charging when we get our first EV. Is there any reason why I can't put the meters in the shed and get National Grid to take the 3-plase power directly to the shed this autumn? This way the shed can be connected this autumn and I won't need to install a temporary supply. The annexe will then be attached via an underground conduit which will be installed as part of the build process for the annexe. What size supply should I ask National Grid for? (PS the shed will never have a huge demand as power only required for lighting and occasional 3kw for tools.) Will National Grid want to charge me more as it is not initially domestic ? Any other thoughts would be appreciated. Thanks in advance [/QUOTE]
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