THAT'S NOT A CONSUMER UNIT - 3 PHASE POWER FOR NEW BUILD HOMES
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- เผยแพร่เมื่อ 14 ก.ค. 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
Gary Hayers - Editor eFIXX
Gordon Routledge CEng MIET - Technology Editor eFIXX ===================================
#efixx #electricians - วิทยาศาสตร์และเทคโนโลยี
Check out the finished Parc Eirin installation - 📺 👉 th-cam.com/video/jVVaUhFZb_o/w-d-xo.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.
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.
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
This is great, can’t come fast enough for me 👏🏼
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!
Great video guys, thanks for sharing.
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
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!
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 .
Absolutely agree with this. This is what limits the size of roof mounted PV. Supply balance is critically important.
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...
Great stuff boys!
Thanks
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.
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!
Love those hats 😂 oh and think I'm glad I'm retiring in a couple of years
Excellent idea bring it
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
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.
Great video 😎
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
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!
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.
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.
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.
Wow interesting, you guys are so behind the times, here in Australia our houses have had 3 phase power for over 50 years.
1:40 that hole cover the being used as a drip catcher hehe
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 ?
1:38 - the perfect way to funnel the water into the hole. and into the property..! LOL
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?
0:23 Nice application of mortar on the windows there...!
Please do more on rotating phases, I'm sure many guys are installing multiple EV points and not rotating phases.
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.
7:40 - a dedicated utility network connection - no thanks. Wow, Big Brother is definitely watching you here!
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?
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.
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.
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?
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.
Very nice super like
8:08 Just beautiful!
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!
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?
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.
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) 🙂
Great opportunities for sparks ⚡️
On the money 💰
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.
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.
0:17 lovely condition for a brand new property...!
A bit more volume on the video would be nice, thanks! Apologies if this is not the type of question you expect.
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!
Loving this series guys, western powers offering free upgrades to 3ph?
Still common here in Australia to see 3 phase going into larger houses to run airconditioning etc
Good
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!
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
Newbuilds regularly have dual RCD type AC boards even today. No developer is going to pay for this stuff and compliance will be unchecked.
I've fitted quite a lot of their meters.its an impressive estate to be honest.
Thanks for the feedback 👍🏻
What are you thoughts about having 415v in a domestic house.
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.
Your Wylex RCBO looks like a Siemens for me :D
Wylex is a Siemens brand
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.
Many rural French properties have always been served by three phase, although it's more likely to be 20 amps per phase!
Normal incomer in Central Europe usually we fuse them in 50 or 63 amp
How is the SWA terminated in the meter box ? Doesn't look enough room for a SW fuse
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.
Hi Gary, do you have any details on the consumer unit. Looks ideal for one of my Customer projects. Kind regards Robin
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
How feasible would it be for everyone in the average street to retrofit 3 phase?
What did they use to gland the 4c 25mm into inside the metering box to use the armourings as a earth ?
the sound is low can you fix it.
Thanks
I know it is a small thing - but should they not have put in a larger DNO box on the outside of the house?
How’s anyone supposed to fuse the tails on a 4 core cable in that enclosure?
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.
nice to see the large holes drilled in joists for circuit cables, definatley wouldn't pass on our sites and think the building regs guro's would have something to say
These are I-joists - not usually an issue if manufacturers instructions are followed. www.jamesjones.co.uk/assets/uploads/files/technical-info/jji-site-construction-guide-sept-17.pdf
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
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.
Can't hear what anyone is saying!!! I've got everything at max volume, and it's soooo quiet.
EDIT: I'm on my main PC now and I can hear with my 150W speakers connected to my 350W crown amp at max volume!!! Not my amp or speakers sadly:(
Same here, sack the mic guy...
Same here. I can't hear fuck all. This could all be done in the editing stage. Not the first time either. Unsubbed.
I would be interested in seeing how someone is going to terminate that 4 core 25mm swa into that main switch, because I can't see them getting a TP&N switch fuse in that meter box.
That's the first thing I noticed looking at that meter box. The sparky on this job is going to have a nightmare sorting that out.
In one of the videos they ranted on about not installing any other switch gear in the meter box.🙉
Why? Don't you think 25mm cable can cope with a 100A fuse without having an identical fuse next to it?
@@MrRorz12 yeah I seen that, I can't believe that the amount of effort that went in designing those installs that they missed installing a second box for the switch fuse, it's a struggle with only a switch fuse in on a 25mm swa, I know I have just done one, and it was only easy because I made the switch off and pulled the slack back
@@markrainford1219 oh the cable can cope, no problem there, but where's the switch fuse going to go?
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!
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.
Well,I watched it end to end ...and unless I blinked I didn't see how the 4x25 SWA was finished off in the meter box
We will be covering that in a future video
Now that's scary if this is the future think il hang up my tool belt now while I've still got a tiny bit of sanity left
This smart stuff is all very impressive, but if something fails in that secret control box in a few years time who's going to be able to fix it? Will the original installer do it, but what if they've gone out of business by then? I assume form the secrecy that it's not an 'off the shelf' item...
No secrets... we use loxone
No way they'll admit it but companies are still "hotrodding" their heat pumps and storage batteries to work together on areas I've worked in.
Only way to get them maintained is from the original installer and manufacturers.
Supposed 10 year guarantee on hot water batteries which fail after 3 and cost 3k to renew with no serviceable parts.
No issue with 3 phase going to homes but homeowners need to prepare for big bills on all these technologies.
Personally, I'd go storage heaters over this lot of white elephants.
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
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.
We seem to be skirting around how that 25x4 SWA is to be terminated in the meter box! Come on, give us a clue please
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!
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
400v at 300a? Awesome!
Well it's not is it! That would be 400x300=120kw
In reality it's more like 230v x 100A x 3 phases which is 69kw
The 400v @ 300A is marketing speak. Marketing don't understand AC let alone 3 phase.
Interesting experiment! That board is definitely overkill for a 2 bed semi. It’s great to have space for future upgrades, but a 2 bed semi is never going to need this much extra. Surely a standard 3ph commercial DB would suffice at less than half the size. Also the extra metering in the board is presumably only there for them to gather data on this prototype estate and wouldn’t be installed on a wider scale?
The extra rails are required for metering and interface modules for the tech. You dont have free DIN rail space in a regular 3 phase DB.
It's just tech companies showboating. Completely impractical for the majority of ordinary home owners to maintain correctly or deal with when issues occur.
Worked on an estate similar to this in the North East of England and residents have a terrible time.
May be getting cynical as I age, but I'm not convinced.
Could we please have a deep dive into the meter and how it switches phases to ensure balancing, I get there’s a data transaction between the din meters consumption and supply meter. But really would appreciate a vid from the Meter manufacturers….please get em on here.. 👍🏼
The meter does not actively switch phases, The method they are talking about is called a "phase roll" so the first property is connected left to right as such; L1, L2 and L3, The next property is connected left to right as L3, L1 and L2. a third property is connected L2, L3 then L1. so the three phases are being "rolled" one place to the right each time... This ensures the three phase is still rotating in the same direction but the lines can be balanced amongst these properties that have identical internal wiring.
Great answer!
@@bibo159 thank you so this limits this effect but cannot rule out unbalanced three phases…? I Mrs Jones is in the hot tub and Terry is charging the car. Surely this will result in three phases being not used equally…? Right? Assuming charger is 3 phase and the tub is single let’s throw in an electric shower also…
I’ve always wonder how they manage it on the continent in Germany etc…
… I see, are you saying three phase is available for the three phase items that require it but each home as a rule has been installed with one of the decided phases selected to run that homes S-Phase installation, behaving as the supply for that dwelling in effect.
This is typical how the DNO roll out Single phase to most properties anyway usually one house has the 3phase minted or buried and if the former it’s strung across the next 3 properties..?
@@markhardacre1 I think you are getting confused between Delta and Star three phase systems in addition to single phase, without going too far down a rabbit hole, 'Most' Low voltage mains supplies are in a three phase star configuration.
This means they have a neutral conductor, This only conducts the imbalance current between line conductors. so no the system does not need to be balanced at all.
However imbalance causes massive inefficiencies and even voltage problems upstream due the delta configured of high voltage feeding circuits. (delta does not have a neutral so cannot dissipate imbalanced currents, therefore the voltage is effected due to complex electrical principles.)
The consumer unit they showed in this video is three phase, However some of the final circuits are single phase meaning they only require one phase, a neutral and protective conductor(Earth/CPC or whatever the IET want to call it next so they can sell a new flavour of the 7671)
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.
How the hell are they connecting the armoured cable in that meter cupboard.. bet there will be exposed inner cores or the armoured bedding showing...
@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”
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.