THAT'S NOT A CONSUMER UNIT - 3 PHASE POWER FOR NEW BUILD HOMES
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- Опубликовано: 17 май 2024
- This consumer unit is enormous compared to the unit usually installed within UK homes. This is a house with a difference. It's the first major housing development to be supplied with three-phase power as part of the Western Power Distribution (WPD) low carbon technology strategy.
This two-bedroom house is being kitted out with low carbon technologies that we expect to be commonplace as we move away from gas heating. In this video, we explore the first fix electrical installation for PV, battery storage, ground source heat pumps and EV charger.
See the completed installation 👉 • THE FUTURE OF HOME ENE...
This is installation is part of the Parc Eirin project by POBL Homes. Energy Services provided by the Sero Group.
More information
Sero Group
hub.efixx.co.uk/sero-group
Parc Eirin
hub.efixx.co.uk/pobl-parc-eirin
Electrical installation by
Blues Ltd - Cardiff
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🕐 TIME STAMPS 🕕
00:00 Three phase residential electrical supply
02:20 Balancing the three-phase supply
03:20 Three-phase consumer unit
04:00 Surge protection
05:10 Metering of regulated and unregulated loads
05:30 AFDD protection on sockets and hob circuit
06:20 First fix power and data wiring
07:40 Dedicated fibre network for energy management
08:15 Ground source heat pump supply
08:36 Upskilling for low carbon tech opportunities
10:00 A housing estate as an energy assest.
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📹 Presented by
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Gordon Routledge CEng MIET - Technology Editor eFIXX ===================================
#efixx #electricians 
Наука
Check out the finished Parc Eirin installation - 📺 👉 ruclips.net/video/jVVaUhFZb_o/видео.html
hi sir im your big fan ang electrical engineering graduate i dont have job please help me
Will you have to pay three standing charges though?
sort out the volume too low
I am ax retired electrician. Amazed how standards have changed. Been out of it for many years now. Very impressed with what I saw of the installation in a new property. Was only yesterday when I heard about 20kw high current charging. This I felt was going you cause a major demand situation. By coincidence I have found you today carrying out a 3 phase supply to a basic home. 60amp S Phase in my time max. glad to see this has been addressed for new homes. Wish I was still young. When I started my apprenticeship, I found myself removing gas. lighting to wire out homes for the first time. That was in Margate Kent. Contractor still going today. Thanks for the video.
It’s so good to see young guys presenting their work. Shows their is hope in future generations to continue building and improving infrastructure rather than just maintaining.
Jings, one could buy a whole wee house in Merthyr Tydfil for just the cost of that distribution board and AFDDs.
Impressive stuff, kudos to the DNO and housing developer for being forward-thinking
Whenever I saw British consumer units I was always amazed that relatively big loads like water heaters for showers and hobs were single phase only, using thick wire and breakers with 40 or 50 amps. I am used to having 3 phase in every house for ages, the breakers being 10 to 16 amps max. Flats were often single phase only with a 35 amp main fuse, if heating and hot water ran on gas. If you had electric heat or hot water, 3 phase has been common since the 1960s.
Even reduces wiring costs. If you can feed a hob with 5x2.5mm² wire (400V 16A) vs. 3x6mm² (230V 40A) that's almost 1/3 less copper needed.
One day we may catch up!
Where are you?
Germany...
3 phase is really common around here, I think also in France, Austria and Switzerland. Don't know about other countries for sure.
Single phase supply is still used in some houses in rural areas or in flats, although the building will have a 3 phase service which is split for the single flats.
3 phase motors in non-commercial environments are not really a thing, except for maybe sewer pumps or lifts in larger building complexes, but being able to split large loads on 3 phases is quite nice!
@@efixx Well, everything is working fine, no need to rush :-) Just keep the nice 1363 plugs!
@@moffarocka3537 There's no reason why Hobs can't be wired up for 3 phase considering most of them now come with 5x 2.5 flex manufacturer supplied attached, so if the property had a facility for it.
Absolutely agree with this. This is what limits the size of roof mounted PV. Supply balance is critically important.
Really useful information - even as a non-electrician! we're about to build a replacement dwelling and trying to get to the bottom of electrical & heating needs - Western power have indeed coincidently just upgraded us to 3 phase without asking!
3 phase for domestic has been normal in Denmark for 50+ years. We only have 13 and 16 amp fuses. The hob run on 3x16A on a 2.5mm2 cable. The rest of the house on 13A fuses and 1.5mm2 cables
Thanks very much once again. Really informative! Found the data cabling for the heating etc interesting. Working on a house presently with a smart heating system (nowhere near as complicated as yours) but I was interested to see what was in yours. Plenty to think about as usual!
Great video guys, thanks for sharing.
This is great, can’t come fast enough for me 👏🏼
8:08 Just beautiful!
A lovely smart job guys. Never done fibre optic before . I can see some future update corses being needed if I’m going to keep up to date with the latest tech .
I would like to have the wiring diagram for that large panel discussed while looking at the actual parts. I would have learned a lot more.
I'm impressed. Might have to move back to Wales just for this. Now if I can set up my woodworking shop in the garage I've got somewhere to plug in my cabinet saw.
That was my thought 3 phase for the garage, although wouldn't want a 2 bed semi
Damn you could go sledging in that panel enclosure! Amazing stuff its crazy to think that we have ended up here from timber framed 3036 units in a relatively short space of time when you look at the bigger picture. The network would be RS485 protocol surely? RS45 is a conversion adapter I think. Well anyhow better than 232 on a serial!
Are they actually fitting 3 phase smart meters? Trying to get an upgrade on an existing 3 phase install depends very much on provider as the installer has to have additional training.
Great stuff boys!
Thanks
1:40 that hole cover the being used as a drip catcher hehe
I could only imagine this being useful in large houses, in an instance where a single board isn’t sufficient and you have many high current loads, fantastic! 3 phase for all! I could imagine the balancing load situation could be tampered with by DIY Dave’s in the future though...
Re the SPDs in the DB, what is the risk assessment for the type 2 SPDs you refer to? The CRL / risk assessment of 443.5 only applies to transient overvoltages of atmospheric origin, hence type 1 SPDs, so which/what risk assessment are you referring to regarding switching overvoltages requiring type 2 SPDs?
Looks like there’s a 4 core SWA going from the suppliers meter to the big DB on the inside of the house. Presuming the SWA is longer than 3m, doesn’t this need a FUSED TP&N isolator?
Excellent idea bring it
Love those hats 😂 oh and think I'm glad I'm retiring in a couple of years
Gents, this really is interesting, thank you. Personally I see this as the future. Kudos to Western Power as a DNO for providing a TP&N supply and also Influencing customers to 'De-carbonise'! How innovative. Not just ahead but leading the way! I have no issue with the audio, sounds okay to me but I did struggle a bit with the accents (apologies from London) Did Kian of WPD say he was working with Zero or Sero - what do they do? Also, what did Dan say he was doing the Sero or sound controls? Did Gordon say coook? Lol. Please clarify the reference to a 'shoebox'. Looks like there is loads of opportunity for good Sparks going forward. Looking forward to Part 3 on the site as an energy asset to WPD.
Thanks - Zero is the English translation of the welsh Sero - Sero are the energy services partner for the project.
0:23 Nice application of mortar on the windows there...!
Now you have single RDCs do you agree it would be better to use 10ma not 30ma have to had any discussion about 10 20 and 30ma RCDs?
They built a new supermarket near me in the early 1980s. Entire room heating was via heat pumps taking heat from local air.
Since the latest refit with new inefficient aisle fridges, they've had to fit gas fire heating to the fridge aisle to keep the customers warm. The Technibel heat pump system was decommissioned decades ago.
So now the gas heating system heats the fridges which pump the heat out of the building to the plant room where it's heating the air outside.
From the previous video someone said it’s over kill! Nope just as the chap saying system is balanced, products using more power than normal eg chargers will be split and balanced. Think it’s a fantastic idea.
For years thought 3phase would be a great idea in domestic properties, as we have installed heat pumps and EV chargers this would of had a massive benefit.
Great videos again guys keep up the great work.
The future (hopefully)
The silly thing is back when GEC Nightstor boilers were first envisioned 3 phase domestic supplies were going to be the norm. Then natural gas became super cheap and took over instead but even now those GEC Nightstor boilers that are out there are as cheap to run as natural gas, that's 50 year old electric heating technology. Unfortunately we're in a capitalist society so progress goes where ever the money can be made and legislation happens afterwards rather than it being the other way round.
in reality its only gonna be balanced if your using nothin but 3 phase loads. its all marketing wank. 99% of your loads are still single phase, its completely random as to which loads you are gonna use the majority of the time, so nothin at all changes really. i guarantee you measur L1-L2 2-3 1-3, your loads are def not gonna be balanced, not to mention, is a friggin house, your not gonna be pulling more than 20-30 amps at any given time, an thats if its summer n u got ur ac blastin at that. 100% this is a hustle, and a waste of money.
@@trope5105 surly having 3ph charger, 3phase heating/AC units will be balanced between.
Making sure sockets feeding large white goods are on different phases?! Then things on your ring circuits are not going to cause any problem same with lighting as it’s such low consumption. I think it’s a good idea.
@@Beariam24 well im definietly not gonna spend the money to do this, specially when balancing 3 phase loads is not a big deal what so ever in this setting. not to mention im for sure not gonna waste my money on a 3 phase unit when a single phase one is a quarter the price for the same amount of power n work output
How far was the meter box to the consumer unit?
Sparkies seem to want to installed an extra fused box separate to the meter box. And when it 3 phase thats a big box
I know about phase rotation and I know that to balance the load we can wire the phases different but still keep the rotation in the correct order. My question is that I haven't heard a simple term for it. Any help.
Can see the whole estate level networking and management being a pain in 10 years time, if working at all. Fine for a municipal building, shared boilers etc but if it were my house I'd want the data systems to be standalone.
Add 30cm to the width and you have roughly the standard sitze for German houses in the last decades 😉
Happy to see that the UK electricians don’t have to fiddle around anymore in those very small units (at least in some new homes) 🙂
Super interesting! I'm in New Zealand and have an old house built in 1953 and the supply is annoyingly split in two, 32a to the night rate meter and 32a to the day rate meter. I want to put solar in and a second heat pump for the second living area and get rid of the gas fire, plus I have an EV that will chug down 32a on it's own. will need a three phase supply for that me thinks!
People thinking a domestic with full 3 phase is overkill is being stupid. Electric shower on with the hob on can be nearly 80 amps alone , before heaters or car chargers .I did my house upgrade to 3 phase. Not only do I now have a future proof house. I have the ability to use 3 phase motors , fantastic for the home workshop.
👋 do you get three standing charges on your bill or is it a cumulative cost?
@@HughEdwards it's 1 charge . Guess it may vary from providers .
How much did it cost for the upgrade from single phase to 3 phase?
@@Ily2361 £2200 for them to dig up a bit of the road, and do the cutout. I did the digging on my land , it lowered the cost.
Standard in the WPD area for new builds
Just to add to this. I'm in an existing 1950s council house and Western Power/National Grid as they are known now, installed a 3 phase supply when removing a looped supply. WPD/National Grid were fantastic getting this installed but getting a 3 phase domestic meter on the other hand from British Gas has been nothing short of a nightmare so the entire house is still on 1 phase at the moment.
1:38 - the perfect way to funnel the water into the hole. and into the property..! LOL
Well I'm glad when we moved the electric supply from the cellar in the house to the new garage I built 30 years ago, that I had them put 3 phase in instead of single phase. Now we are looking to sell and downsize it looks like it may be a selling point. And it only cost 70 quid to have it moved 30 years ago.
Yes seventy quid wow. Back then they took into account the increased amount of leccy you would be buying. Now the DNOs also have to make a profit.
As a long time retired electrician, I keep suggesting to my son to retrain as an electrician. He is currently a landline phone/data network engineer. With our reliance on electricity ever increasing it is the way to go.
As we saw in the video, most of the larger electrical appliances (heat pumps, inverters, batteries, EV Chargers) also require a data connection these days, so an electrician that is also comfortable wiring high speed data networks should be in demand, whereas "phone lines" are on their way out.
0:17 lovely condition for a brand new property...!
Many electric ovens and hobs sold for the European market actually come with the option to connect as 3 phase already, so depending on the equipment being installed, balancing the load might be fairly easy if this kind of supply becomes more common.
Obviously they have had three phase for years
@@robertsmith9836 The UK is really out on a limb with respect to the rest of Europe.
What did they use to gland the 4c 25mm into inside the metering box to use the armourings as a earth ?
As an adult learner currently doing my lvl 3 (8202) this is something that is a really exciting change, I'd really like to be employed by an installer who carried out this kind of work or the DNO
Get in to any DNO or IDNO doing anything to get your foot in the door. Great places to work and so much more interesting.
@@coster1983 ive applied 3 times now, not giving up, whats IDNO ?
Please do more on rotating phases, I'm sure many guys are installing multiple EV points and not rotating phases.
What are you thoughts about having 415v in a domestic house.
Hi Gary, do you have any details on the consumer unit. Looks ideal for one of my Customer projects. Kind regards Robin
Interesting! We are going for more and more TP boards in bigger houses, even connecting ovens in TP to balance.
Bit confused how the phase swapping at meter will go in the long run. I can see why they’re doing it, but managing circuits inside seems more sensible to us…
How are they terminating the SWA in the meter cabinet? Can’t see a TPN switch fuse going in there!
Basically they are going TP but then they're a little to shy to go all the way.
I'm from Germany and my single family home has a main distribution board that makes the one presented in the video look trivial plus two more and all including the meter are TP. SP is dying over here, more or less.
Rather than phase swapping, I'd prefer to see each house equipped with three-phase to single-phase UPS for critical loads (e.g. lights, smoke alarms, heating circulation pumps) and a phase converter for non-critical loads - net result is the network is always balanced.
Great video 😎
Is the ev charge 3phase outside or still single phase on that install or can you run 3 single phase chargers at the one property
It’s a 3 phase charger - you could in theory have 3 x single phase
@eFIXX guys some questions. Is this a bespoke TP+N panel from Wyler not available to purchase or have you come across similar panels which all the addition of extra din rails for metering and affd’s?
Also what is the purple data cable, you didn’t say what it was - is this cat 5 or 6 ? It looked like it had twisted pairs but would be good to clarify?
When you brought the CPC through, was there any mechanical protection?
Sorry iPad autocorrect is a pain - “ Wylex” and “with the”
Loving this series guys, western powers offering free upgrades to 3ph?
Wow interesting, you guys are so behind the times, here in Australia our houses have had 3 phase power for over 50 years.
Hello, i was wondering what youd recommended on a consumer unit that is somewhat futureproof. I heard three phase is really expensive to retrofit. I was looking to install solar, thermal battery, infrared heating, battery and ev charger in the future. Thanks for any help.
Worth biting the bullet and doing it now, single phase is limited to 80A or 100A in certain conditions. A 32A car charger is a good sized chunk of that. The other option is to load manage everything but you could end up with longer charge times or reduced heat output from HP.
Would there be two fiber data connections to each property or is it shared network for estate and personal connections are sent on the same cable "multimode" .
It’s a private network for the energy services. Home users has a regular open reach line
So do you move house after 7-10 years when all the tech starts to break down? Or is there a service charge or insurance that you put down against it?
3-phase or not, 100a or 200a, in the USA they have decent sized CUs.
Ours in the Uk have always baffled me. Spending so much time cramming all the wires in to a box the size of a bit of A4 - or slightly bigger.
This is the hub of all your house electrics. It deserves a decent space in your home.
“Oh but UK houses are much smaller than USA ones....” - no, I don’t buy that as an excuse.
When I rewired my house I terminated all the runs to a separate 2 row large DIN box with lots of space. Then ran wires to standard CU - I did this only to be “compliant” and to stop the next spark moaning at me. Or if we sold the house.
Sunday Rant over 😁
you're not wrong. we have rules about how big a box you have to have to accommodate the number of things that will be going in it. and even an under 700 square foot cottage, here, is likely to have at least 20 poles worth of circuits, with every appliance getting its very own.
I’ve been an US electrician for 20years now in the northeast. Our older panels and meters are smaller too. They started gaining size while I was training up. We used to joke about the new meter size saying, we could fit a family of three in them.
Aside from these 3phase units, it does look like your panels are gaining size too. Which is good for workability and safety. But just imagine the mess you see in your panels, at times, being all over a 42” long 14-1/4” wide 200amp North American panel…like a plate of spaghetti!
7:40 - a dedicated utility network connection - no thanks. Wow, Big Brother is definitely watching you here!
How feasible would it be for everyone in the average street to retrofit 3 phase?
I know it is a small thing - but should they not have put in a larger DNO box on the outside of the house?
I’m just buying an off-plan new build due to be completed summer 2022 and have requested a 3-Phase supply from the house builder (northern power grid is the DNO) - I’m hoping it’s approved as it’s the future! Especially with heatpumps / EV’s / AC etc. The UK is so behind continental Europe with our shoddy single phase supplies / ring mains etc! It should be the standard in new 3+ bed homes in my opinion. Good work western power!
Good lucky - let us know how you get on!
Is their a difference in price of having a 3 phase electric meter installed per day or is it same sort of charge per unit as a single phase meter? Also do you need a specific commercial supplier instead of the domestic ones like octopus energy?
How is the SWA terminated in the meter box ? Doesn't look enough room for a SW fuse
Do I need 3 phase for a 1200 sq. Ft. House?
Only big frig, dryer, well pump and solar
Very interesting. Noted that the EV Charger had a cover fitted upside down below it where the cabke went into the wall near the beginning!
Gas is on the way out for new builds, it'd be interesting to know what the ongoing service charges will be to maintain the estate network/services?
Good to see 3 phase, a shame more suppliers aren't doing it to future proof their areas.
£9.99 a month for the energy service provider app - more content on this coming soon
@@efixx thanks
Some electric ovens that are made for both the UK and Europe markets have got different wiring options that configure them for single phase or three phase mode of operation, as well as dip switches that control the maximum current that can be drawn over that single phase. Sometimes the only difference is the UK manual only explains how to wire them up for a single phase!
Great insight we’ll check that out 👍
Ranges are typically connected to three phases (3 x 16 A) in Finland but a single phase (20-25 A) is also an option as not every apartment necessarily get three phases. In Sweden they actually have 400 V ones that require three phases.
About time we have three phases. We can have those large dryers and washers we always use in laundraumats and can also have an EV super charger 😍
The Americans manage large driers with 240V single phase (albeit in that odd 120-0-120 format). In any event, the problem with putting large driers into UK homes is not the power required. I doubt any use anything like as much as an electric shower, but the space to install them.
Whats the brand and model number of the distribution board/consumer unit please?
Would the standing charge daily rate be the same, given the homes will offer better balancing for the DNO?
Daily charges are set by the supply company not the DNO, granted a small portion of this goes to the DNO but not as much as you think.
More info on how the system works in this new video - ruclips.net/video/onDwGJ5-cy4/видео.html
Great opportunities for sparks ⚡️
On the money 💰
Sorry for the potentially daft question as I'm not a spark but I have heard some people say putting more than 1 phase in a domestic means you are bringing in over 400v instead of 230v, which can be potentially more dangerous although they the odds of making contact with both phases at once are quite low.
Are there really extra safety concerns for people with 3 phase installed?
Each phase is 230V, you just get three of them.
But you get to also connect up 400V big ticket items like a heat pump and a super charger for your EV.
@@MostlyPennyCat Apologies I just realised how badly worded my question was, I get the bit about x3 230v phases & across any 2 phases you can get around 400v, so the potentially the risk of a 400v shock exists within your house via damaged wiring etc, (or so I've been told) but I wondered just how likely it is or if there are specific precautions taken in the instal to mitigate against it etc?
@@northeastcorals
We have lots of very tight building and electrical regs to ensure that our stuff is as safe as it is possible to be.
Both in installation and not getting damaged over time. Including testing extreme circumstances like flooding and fire. And test intervals to ensure nothing goes wrong.
And then they account for extreme circumstances such as nobody bothers to do regular testing.
Just... Don't ask me what the specs are _called_ (I just know they exist 😂)
I suppose the only bit I know about are those AFCIs they mentioned.
If they detect at least 30ma of current leaking from live to ground, that's you getting electrocuted, they cut the power. Multiply redundant system too, in case something fails.
Our obsession with safety is something to be proud of! ☕🧐👍
Very nice super like
I've fitted quite a lot of their meters.its an impressive estate to be honest.
Thanks for the feedback 👍🏻
Im a new electrician living in Finland. But im pretty sure 3 phase supply has been used for ages here already. (20+years) Usually all gadgets over 6 kW are 3 phased. 3x 10amp 230v. Or 3x 16amp 230v. Regular homes dont have bigger fuses than 16amps. Only the main fuses are usually 25amps
Great info - What about the Sauna
@@efixx sauna ovens are usually 6-11kW. So 3x10amp 230v or 3x16amp 230v. There are no RCDs protecting sauna oven circuits though.
the sound is low can you fix it.
Thanks
Good
Do you think Screwfix will do one of those three phase boards on the cheap BG branded 🐔
Give it a couple of years and the DIY brigade will be in the wholesalers asking for them 😂😂
It will be a steal at 2 grand a piece populated.
How’s anyone supposed to fuse the tails on a 4 core cable in that enclosure?
That panel board is starting to look similar in size to a typical north American panel. Still a very different design with a mix of bus bars and cable, but the size and construction of it is much closer.
It's not obvious to me how this better balances the VNO network compared to rolling the phases at the property level. However, I can see the advantage of providing three phase to the household in terms of the amount of power that can be provided. However, it introduces a lot more complexity in the household wiring. Also, some of the techniques that car charges use to avoid overloading the incoming supply by monitoring the current consumption through a single phase and de-rating accordingly, are not going to be as simple, or maybe the thinking is that it won't matter given the huge amount of power that could be delivered.
In any event, that's a lot of space taken up in the properties. Fine in those larger houses, but not so much in a one or two bedroom property.
are they fusing down the SWA at the meter box?
Couldn’t see any
A bit more volume on the video would be nice, thanks! Apologies if this is not the type of question you expect.
Would interesting to know more about how they are balancing over the whole estate.
Gary did mention that they rotate the phases in the various cut outs to overcome the convention of always putting lighting on L1 etc. However, I was thinking similar to you and then thought wouldn't it be good if there was some form of monitoring and changeover so they could actually move the loads and balance the estate network if a certain phase was being overloaded? I guess the trouble with that would be that any three phase equipment would change direction. There must be a feasible solution to this somewhere though..
@@jollyfinequality9865 that's kind of the line I was thinking of, it must be the knowen loads the sparks are using in the first instance? Hence why you need a massive board.
Still common here in Australia to see 3 phase going into larger houses to run airconditioning etc
Grate video! but unusually the video volume is a bit now for me listening on a smartphone but probably ok if I was using headphones!
Newbuilds regularly have dual RCD type AC boards even today. No developer is going to pay for this stuff and compliance will be unchecked.
Your Wylex RCBO looks like a Siemens for me :D
Wylex is a Siemens brand
Interesting design on the DB. It would be more common on a large domestic install here in Australia to just use the two sides of the 3-phase chassis rather than breaking out to rows of RCBOs. Do you know the reasoning behind this? Perhaps just to maintain familiarity for domestic electricians unused to chassis systems?
I'm a Brit spark with lots of domestic and commerical experience and even for me this makes my head spin! I would normally do exactly what you just said; I've never seen a DB like that with both horizontal and vertical chassis'.. Crazy!
Normal incomer in Central Europe usually we fuse them in 50 or 63 amp
In Norway we have supplied 3 phase to all the houses for years now already. Think it is more common to have 3 phase than 2 phase nowadays.
This all looks great, but considering most house bashing sparks struggle to wire a normal consumer unit nicely, I predict These boxes will hide some right horrible installs!
You HAVE to laugh! Only 50 years behind much of Europe ... Germany especially! Well I suppose it's good that it's FINALLY coming! Thank God for EVs!
I heard you aren't allowed to bend metal conduit on your country
@@cocoino2307Where did you hear that?
@@boblewis5558 a bloke on a building site, he said they made him take all the 90s bends
As a rally fan, my reponse would have been ... "At what kind of speed and was he ditch hooking to do it?" 😂😂😂
In my state in Australia - we have been insisting on 3-phase supplies to houses for about 8 years now. It allows for 20kW of solar per household - and will allow for charging.
All that sun ☀️ 👍
Which state? Currently in SA the limit is 5kw per phase without special approvals
@@johnschroeder3072 You need 3-Phase and your approval is almost automatic.
@@tcpnetworks That doesn't make sense in regards to my comment. I mentioned per phase which would imply that it could go up to 15kw on a 3 phase system which is not 20kw.
QLD stipulates a max of 6.6KW system for a domestic install.
I dare not think what this system costs and would be worried about that battery pack being a big fire risk having it inside the house especially after all the new metal consumer units to reduce fire. What is the cost for this complete installation on this two bed.
Very useful for me - thanks !! I am about to embark on a self-build with a load of solar, heat pump and 3-phase. My DNO is SSEN, but not heard great things about them and domestic 3-ph installs. Anyone here had any experience with them?
We would love to come and see your project
@@efixx I will message you through your website contact
Why do you even need the DNO?
@@Swwils because the DNO are the people who control the power network, and would be the ones who install the 3-phase cabling & metering to the premises.
@@CoolSteve08not enough solar and storage to go off grid then.
Many rural French properties have always been served by three phase, although it's more likely to be 20 amps per phase!
Asked about 3-phase when gutting and rebuilding current 1930s semi. Advised not to bother. All me reasoning has proved valid. Wish I'd insisted
Here in Germany we use three phase since the sixties. A normal charging wall box have 3x 32A (22kW). Do not forget 2nd car (wife/child) or for your guest - also two 3x 32A (= 3x 64A)[wall boxes] + normal home (3× 64A normally). This together are 3x 128A main fuse only.
Why you install 3x 300A for a normal house in UK? I know you love 100A till 200A for one phase in UK but is not this a little bit overkill?
Its 3x 100A people are getting it wrong
@@Rich10000 So are three 100 ampere are 300 ampere over all. This not so heavy as I mentioned but what power do you need? How many tea kettle with 2500 W do you have in every room - we need one in kitchen only. Or do you thinking at future where every household use three electric cars?
The battery storage is genius but direct in the hot and wet kitchen? I know your island people love the green/yellow saved earth at every metal place (wonder why the metal pot on hob not have metal line at cooking time). Why do not install it in cellar or roof?
@@OldLordSpeedy 300 amp overall added up but you can pull a max of 100 amp from each phase. I'd imagine our electrical requirments for a household are essentially the same as German ones. They're antisipating us to use more energy in the future - how is that green though plugging in a 22kw car and heatpumps etc.
Yeah the battery is in a silly location but these tiny 2 bedroom semi detached houses are so small and have no garages theres no where to put all this kit. Not to mention how much more expensive the giant fuseboard and batteries are, were talking an order or magnitude higher here, a fuseboard swap and cert will not be £350 anymore it will be £3500 if you're lucky.
What you failed to mention is that western power will bring 3 phase to your meter cabinet but you can then still use single phase for the home. We are building highly insulated homes that are supplied by WP. 3 phase and 300amp is definitely excessive for one house. We have all electric houses and have had diversification analysis done and reduced our demand considerably. No heat pumps no electric showers. People forget that the costs to supply a large site are huge if you want that much demand on the grid. I do all our utility contracts for our sites and some of the prices we were getting for the connections are outrageous until we prove that our demands are lower. Down from 1000kva to 350kva for the transformer on one job.
Yes you can of course still opt to use single phase.
Why is the final finish on everything on this build so poor? Great technology, installed shoddily. First fix looks good, fiishing is crap,
That’s painters not electricians
@@efixx completely. Plastering and painting atrocious for a new build.