adrianc
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Post by adrianc on Jun 14, 2021 12:10:13 GMT
Assuming you mean 7kW, the typical load of a car charger (and not 7 Amps which is almost trivial) ... the supply to your house and your street will in practically every case be fine. Most houses have a 23kW supply, some have "only" 16kW. The vast majority of the time you will be pulling a LOT less than that: I was looking at my Smart Meter reports recently and I very rarely exceed 3kWh in an hour, even though I have a lot of electric stuff in my house. I think you misunderstand what I was trying to explain this cable supplies over 100 properties. The electrician who wired my solar panels into the system told me that the existing cabling down the street is sufficient for current demand , but as he put it "add 4 or 5 car chargers and it will overheat" I'd find a new electrician IIWY, if he thinks the main street feed will "overheat" with 4 or 5 x 7kW chargers... Most electric showers are similar power - some are 11kW. www.screwfix.com/c/bathrooms-kitchens/showers/cat820272?=&poweroutputwattskw=10_8_kw
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keitha
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Post by keitha on Jun 14, 2021 12:46:28 GMT
I think you misunderstand what I was trying to explain this cable supplies over 100 properties. The electrician who wired my solar panels into the system told me that the existing cabling down the street is sufficient for current demand , but as he put it "add 4 or 5 car chargers and it will overheat" I'd find a new electrician IIWY, if he thinks the main street feed will "overheat" with 4 or 5 x 7kW chargers... Most electric showers are similar power - some are 11kW. www.screwfix.com/c/bathrooms-kitchens/showers/cat820272?=&poweroutputwattskw=10_8_kwdon't know about other but my shower runs for a few minutes, a car charger probably 10 hours
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ceejay
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Post by ceejay on Jun 14, 2021 14:25:37 GMT
The winter of 63 is very unlikely to come back due to climate change. Not so fast. Any significant global warming has a high chance of affecting the gulf stream, which is all that is ensuring the relatively warm climate that we have in the UK. If that switches, we can all look forward to some much colder winters more in line with other countries at the same latitude as us.
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Post by stevepn on Jun 14, 2021 14:32:41 GMT
1) We already have localised generation, and we will have more. My house turns out 4kW 2) Moving to the intelligent grid was always on the cards 3) Some areas will need upgraded copper and all the switching that entails
Change was always going to come, why all the fear of change, are we rabbits?
Face up to it, we went the wrong way and we built an expanding industrial complex based on first coal and then oil. It has taken us a long way and was a hell of a lot better than that based on slavery. But it was the wrong route forward and now we are having to change to a route forward that does not condemn our decendants to a pitiful life but might offer them a longer future.
Come on guys, get with the programme, it is exciting and being moaning minnies about it is helping no one.
I hope that all this copper that will be used doesn't get stolen in the middle of the night.
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ceejay
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Post by ceejay on Jun 14, 2021 14:32:55 GMT
don't know about other but my shower runs for a few minutes, a car charger probably 10 hours Well, a lot more like 5 hours, in practice ... (current top end batteries are up to 70kWh, sure, so a 10 hour charge - but in normal use you let it run down to c20-30% before charging it up to 80% overnight). But in any case once you get past the first few minutes the time becomes irrelevant - the cabling is either capable of taking the load or it isn't. And in the vast majority of cases it will be fine, and in those where it isn't the infrastructure will have to be upgraded. And, to repeat the most important point, a lot of that charging happens overnight when literally no-one is using their ovens or electric showers and the electricity generators are desperate for someone to make use of their excess power!
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keitha
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2024, hopefully the year I get out of P2P
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Post by keitha on Jun 14, 2021 15:18:20 GMT
don't know about other but my shower runs for a few minutes, a car charger probably 10 hours Well, a lot more like 5 hours, in practice ... (current top end batteries are up to 70kWh, sure, so a 10 hour charge - but in normal use you let it run down to c20-30% before charging it up to 80% overnight). But in any case once you get past the first few minutes the time becomes irrelevant - the cabling is either capable of taking the load or it isn't. And in the vast majority of cases it will be fine, and in those where it isn't the infrastructure will have to be upgraded. And, to repeat the most important point, a lot of that charging happens overnight when literally no-one is using their ovens or electric showers and the electricity generators are desperate for someone to make use of their excess power! Not strictly true at the moment. I'm on Octopus Agile which is a time of use tariff, which reflects the wholesale cost. Last year most nights I had the ability to run most nights at <5P per unit. Tomorrows have literally just dropped in the average is 19.98P the lowest 16.42p , the highest 32.68p. I think this is possibly the future of electricity prices and that 20p a unit will be the norm by the end of this year. I'd not want to charge an EV at 16P a unit. and it means that the current low overnight charges at 5P per hour or less are now unsustainable. By the same token it means those of us with Solar panels are making much more I'm averaging 10P a unit I've just looked at my spreadsheet,for the period to date this year my average cost of electric is 11P a unit last year it was 5P
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adrianc
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Post by adrianc on Jun 14, 2021 15:53:16 GMT
Was last year a freak?
No offices, no shops running their aircon... At the moment, they're open and it's going full-whack.
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Post by bracknellboy on Jun 14, 2021 17:46:57 GMT
1. Sweeping under the carpet the significant challenges of establishing a charging network at scale and pace by flippant comparison to the growth of the network of petrol stations to meet demand of petrol driven cars. In my view a ridiculous comparison since they were able to grow organically alongside growth in total car ownership. As opposed to having existing large scale ownership which you want to switch at speed to an alternative system. [And one which by necessity is likely to require a greater level of 'state' involvement due to need for 'on street' charging in some form]. When petrol cars started to come in, petrol was sold in sealed branded cans by blacksmiths, chemists, and bicycle repair shops. And was in very, very low demand. Electric cars can, for those who live in houses with off-street parking, be charged at home. Those who do not have off-street parking are quite likely to be slower to convert to electric cars, simply because they tend not to be those best able to afford higher-priced brand-new cars, or who live in city centres and do not have any car at all... The figures are all over the place, but various estimates say about 25% of UK households do not have off-street parking. Probably because the National Grid have said repeatedly, over the last few years, it's not an issue.yeah well......and ? But seriously. NG don't have responsibility for generation. The 'state' was intending to have a chunk of NNB come online. Instead we've had Horizon (Hitachi) pull out, and NuGen (Toshiba) pull out. yes we have a big chunk of new wind power going ahead, but as discussed here, storage capability/technology is an 'issue'. I am far from comfortable that planning for generation capacity is even in a safe pair of hands, let alone whether we have the capacity for significant switch over. Frankly. We need it to be.
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Post by bracknellboy on Jun 14, 2021 17:59:31 GMT
1) We already have localised generation, and we will have more. My house turns out 4kW 2) Moving to the intelligent grid was always on the cards 3) Some areas will need upgraded copper and all the switching that entails
Change was always going to come, why all the fear of change, are we rabbits?
Face up to it, we went the wrong way and we built an expanding industrial complex based on first coal and then oil. It has taken us a long way and was a hell of a lot better than that based on slavery. But it was the wrong route forward and now we are having to change to a route forward that does not condemn our decendants to a pitiful life but might offer them a longer future.
Come on guys, get with the programme, it is exciting and being moaning minnies about it is helping no one.
I agree that change both has to happen and will happen. And the faster the better. And I find it depressing when people drop into 'it can't happen because...' or 'imagine having a tractor electric....'etc etc. Humans are extremely resourceful and actually quite clever. S**t loads of money is being thrown at this stuff, that will accelerate the technology and change at the coalface (pun intended). However, being critical/realistic of the issues that lie in the way is the way we will accelerate that process. And yes, intelligent grid and distributed generation is where we are currently partly at and very much the direction of travel/the future. Its a challenge, but one that will be managed.
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adrianc
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Post by adrianc on Jun 14, 2021 20:15:44 GMT
Probably because the National Grid have said repeatedly, over the last few years, it's not an issue. yeah well......and ? But seriously. NG don't have responsibility for generation. They DO have responsibility for distribution and capacity planning. They are responsible for filling short-term capacity shortfalls, too.
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Post by bracknellboy on Jun 14, 2021 21:35:06 GMT
yeah well......and ? But seriously. NG don't have responsibility for generation. They DO have responsibility for distribution and capacity planning. They are responsible for filling short-term capacity shortfalls, too. OK, suddenly I believe their public pronounecments !! Regardless of either the reality, or what I've F2F heard what a couple of their C level execs have said.
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Post by Deleted on Jun 15, 2021 14:08:45 GMT
The winter of 63 is very unlikely to come back due to climate change. Not so fast. Any significant global warming has a high chance of affecting the gulf stream, which is all that is ensuring the relatively warm climate that we have in the UK. If that switches, we can all look forward to some much colder winters more in line with other countries at the same latitude as us. high chance. Really... 5% or 95%
the reality we (both you and I) haven't got a clue on those numbers but you make a good point to raise the issue. Equally 20 years ago we didn't know Brexit was an issue. Life is full of change.
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Post by Ton ⓉⓞⓃ on Jun 15, 2021 15:00:24 GMT
yeah well......and ? But seriously. NG don't have responsibility for generation. They DO have responsibility for distribution and capacity planning. They are responsible for filling short-term capacity shortfalls, too.
*Triads are short periods where the price for electricity to industry & commercial goes through the roof and into outer space, from pence to pounds. But their excuse for triads is it reduces the need to spend on infrastructure, which implies to me that they should be spending on it now. They're allowed by law to do this only so many times a year and it's normally on cold damp days in winter. I'm not aware of any last year but there was at least one this yr.
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Post by Deleted on Jun 16, 2021 10:43:17 GMT
They have triads in France as well despite their 70% nuclear, my friend's electricity bill is amazing with times of crazy prices for just the odd 15 minutes during the year. That is why you need balancing mechanisms built into the grid, like battery, H2 and inertia wheels
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Mick
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Post by Mick on Jun 17, 2021 9:34:33 GMT
Just looking at buying a house, 5 bed Detached, it has air source heat pump. The electricity bill averaged over the last year in excess of £100.00p a week!
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