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2 electricity supplies to one building

Former Community Member
Former Community Member
Hello, I am a not an engineer but need some advice on uk wiring regulations please. 

A national utility company is fitting a 32A charger in my garage for an electric vehicle. 

The garage is detached from my house but there is an existing circuit from the house consumer unit to the garage for lighting and a power socket. The cable runs along a garden wall. 

The new charger will have its own cable run from the same consumer unit in the house down to the garage. 

My problem is that the engineer who came to do the installation refused to do it as he said the garage is a building in its own right and regulations do not allow 2 supplies to one building.

My question is: Do 2 wiring circuits from the same consumer unit constitute 2 supplies If the consumer unit is located in an adjacent building? 

I would have thought that this was still a single supply and to have 2 supplies you need 2 separate meters with 2 consumer units which is not the case here but then, as I said, I’m no engineer. 

Edit.....The engineer stated that the regulation related to avoiding the risk of a voltage between 2 different earths. To me this again only makes sense if you were talking about 2 totally different supplies from different meters and therefore possibly different sub stations etc.
Parents
  • Hi Simon


    Asking the consumers to pay about £3trillion over the next ten years is delusional of the first order. You need to build probably 10 or more nuclear power stations, rip up 100,000 miles of roads, build many hundreds of miles of new EHV lines buy more new transformers than have ever been made at once, and employ every civils contractor in the country for the entire period. You will need to buy a significant proportion of the world's production of copper, aluminium and polymers for cables. A couple of kilowatts for a few hours really doesn't take you far, particularly in Winter. Basically, you are asking the UK to become like Texas at the moment, to have rotating power cuts, and no transport at the same time. The disruption to traffic in towns would bring life to a halt.


    I am not anti-electric cars, but the owners should pay the full real cost, just as the users of fossil fuels do. We do not expect free new oil wells, refineries, supertanker ships, distribution pipelines, and Petrol Stations as the Greens seem to for the equivalents for electric vehicles, they are clearly economically illiterate, but very good at propaganda. Germany is retreating from this quite quickly, they are building coal power stations, because the wind and sun are too expensive and do not work, giving them only very expensive, unreliable electricity. China is building at least 2 coal stations for every one decommissioned in the West. I assume you have an electric car and travel few miles. How is the heater when there is snow on the ground, and how much range is there with full heat? It looks as though you are expecting everyone else to subsidise the "Electric Dream" to the extent of about £30 million for each car. How kind. How does this do anything useful at all, even if you believe CO2 is a monster? Just consider how much fossil fuel will be needed to do all this work, and how much concrete (the new pariah I hear) and bitumen will be needed to do the job. I am still waiting to see electric pavers and proper lorries, excavators and 2000hp bulldozers on sale. They are simply not scientifically possible. Take a 44-tonne artic, They often drive 20 hours a day (multiple drivers) and have 5-700 hp engines. They would need interchangeable battery sections and would suffer considerable load space and weight reduction as a result. At this time they carry sufficient fuel for 1000 miles of motorway driving. 1000 mile battery, = zero load capacity! Ha, another really good idea. I know, railways! How much is HS2? The practicalities of rail freight are terrible too, that's why there isn't much.


    Do you really believe this is the future of electricity? It would be nice if you answer this because when the electrical collapse occurs, it is unlikely that BS7671 will have any relevance any more, people will be dying in droves.


Reply
  • Hi Simon


    Asking the consumers to pay about £3trillion over the next ten years is delusional of the first order. You need to build probably 10 or more nuclear power stations, rip up 100,000 miles of roads, build many hundreds of miles of new EHV lines buy more new transformers than have ever been made at once, and employ every civils contractor in the country for the entire period. You will need to buy a significant proportion of the world's production of copper, aluminium and polymers for cables. A couple of kilowatts for a few hours really doesn't take you far, particularly in Winter. Basically, you are asking the UK to become like Texas at the moment, to have rotating power cuts, and no transport at the same time. The disruption to traffic in towns would bring life to a halt.


    I am not anti-electric cars, but the owners should pay the full real cost, just as the users of fossil fuels do. We do not expect free new oil wells, refineries, supertanker ships, distribution pipelines, and Petrol Stations as the Greens seem to for the equivalents for electric vehicles, they are clearly economically illiterate, but very good at propaganda. Germany is retreating from this quite quickly, they are building coal power stations, because the wind and sun are too expensive and do not work, giving them only very expensive, unreliable electricity. China is building at least 2 coal stations for every one decommissioned in the West. I assume you have an electric car and travel few miles. How is the heater when there is snow on the ground, and how much range is there with full heat? It looks as though you are expecting everyone else to subsidise the "Electric Dream" to the extent of about £30 million for each car. How kind. How does this do anything useful at all, even if you believe CO2 is a monster? Just consider how much fossil fuel will be needed to do all this work, and how much concrete (the new pariah I hear) and bitumen will be needed to do the job. I am still waiting to see electric pavers and proper lorries, excavators and 2000hp bulldozers on sale. They are simply not scientifically possible. Take a 44-tonne artic, They often drive 20 hours a day (multiple drivers) and have 5-700 hp engines. They would need interchangeable battery sections and would suffer considerable load space and weight reduction as a result. At this time they carry sufficient fuel for 1000 miles of motorway driving. 1000 mile battery, = zero load capacity! Ha, another really good idea. I know, railways! How much is HS2? The practicalities of rail freight are terrible too, that's why there isn't much.


    Do you really believe this is the future of electricity? It would be nice if you answer this because when the electrical collapse occurs, it is unlikely that BS7671 will have any relevance any more, people will be dying in droves.


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