Very interesting and something as a consumer I'm surprised hasn't happened more. Love the short and sweet format, max information delivery without losing attention..
Such a much better idea,than a double stacker, seen it done with other three phase boards converted to single phase,,but I'm surprised it isn't more popular option.
I've done this a few times, Contactum TPN boards are very good value. There are a few easy pitfalls to be aware of, only use 10Ka RCBOs as the fly lead's are too short on the 6Ka to reach around the larger DB. Make sure to purchase the TPN blanks as they have a little gromet to hold them in place on the bus bar. Lastly the conversion system is OK but not great, I prefer to use a service connection block to bridge the 3 phase bus as a 25mm2 conductor seems to easily slip out when using the linking kit. Otherwise a great way to have a large number of separate RCBO circuit's. Good video 👍
I know they do this before in commercial installations. Been in many 3 phase boards where there has only been 1 phase and majority of circuits are live. It was only a matter of time before they did it for domestic premises. Love the fact there is a sticker for the torque settings. Although the domestic scene is going to need these larger units soon with all the stickers you need to place on them! 🤣
Did a commercial job like this once. All came populated from manufacturer with the link in. Except the comms room was tpn supply and when the spark (not me) energized it, he proved the pfc at the isolator by a large auditable and visual indication of that copper link going KABLEWEEE.
Well it's about time! Torque setting labels already in a consumer unit / distribution board. I don't think I am the only person who gets fed up looking on manufacturers websites for the torque settings. It only takes one to lead the way... I wonder though if those who are yet to do it will use permanent labels or markings. Also would be great for the torque settings to be marked on the circuit breakers - Then you could populate a CU/DB with different branded breakers to the brand of the CU if able to.
Very similar in physical size to an average, home distribution panel in a US house. Like the idea of DIN rail mounting. Surprised that the main breaker also switches the neutral.
This is a good idea for properties which have a lot of circuits. I live in a property with two consumer units and 38 circuits. It’s quite a large place, there is a lot of circuits because of keeping things easy in case of a fault in the future as there it’s a large place.
I’ve been installing three-phase board as a single phase converted board for the past 10 years in most four bed plus house sizes specially in London extremely easy to do. Only downside is the cost of the RCBO
just think in n.america this is a normal size panel for us lot of room lot of spaces for glands tht you UK sparks seem to hate lol. all of our cables coming into panelboard need to be glanded and secured with in like 8 inches of it too. things i love about your wiring -Armored underground cabling ,switches on outlets, your connecting blocks over our twist caps and the newest one your use of din-rail connectors for panelboard j-box extensions.
I like the sleeving over the ground wire that is applied in the UK. Actually, I think that it would be nice if cable manufacturers would just insulate the ground wires and be done with it. Once breaker panels get big enough and have enough wires inside then bare USA ground wires can be a pain sometimes when working on a live panel - mainly when replacing an old cable whose wires are often at the back of all the others.
@@JasonEDragon i just realized over in the uk you have so few circuits tht yes you seem to have to move and add breakers where yes having earths sheathed makes sense where as in the us panels it may be a pain in the ass to get to but many circuits are never touched we seem to have panels from the old edison fuses still in full operation. i have a couple of times sleeved my grounds usually in j-boxes with multi circuits or device boxes with max wire fill. with your example though if i ever redo my panel or a close frnds i might think about getting some sleeving for the panel earths🤔😉
Must admit, i prefer the wylex NHSPAK conversion kit, comes with a single phase main switch so it looks like it was made for purpose rather than being converted .. ocd in me strikes again.. however, the torque setting sticker is a fantastic addition... well done lads
@@efixx yep.. its such a simple thing, but one hell of a benefit for an installer /service tech .. it's prompted me to always carry a label maker ... as it will save me loads of time if i ever have to go back to a job
I once did a house that had a 3 phase incoming supply with 3 electric meters were I fitted 3 consumer units , The house had 8 bedroom , it then a had a workshop attached to the house were the guy run his business from and his wife run her business from a set of offices from . Each business had to be billed separately from each offer and the house had to have it's own electric bill
Ahhh love that sticker cos we know as soon as we walk away those instructions will be filed in the shiny chrome bin in the office 👍 no whia speedy 2 Gaz 🤗
I hope Contactum manage to bring out mini RCBOs soon, ideally without needing the functional earth connection, as that's my only gripe about their boards at the moment...
Great idea, would prefer to install this than a stacker board, just i wonder how much the cost difference is? Also a great idea from contactum about the torque settings,
Why are torque settings not etched into the plastic above or below the relevant terminal? Can still have a sticker but this way if a breaker, main switch etc is moved out into something else the torque setting is then transferred with it
I'm sure I've seen a very well stacked up Proteus board, if I remember it was YXL??? Type boards stacked 6 high, was almost fully loaded with not just RCBO but with RCD, MCB, digital and analogue timers, contactors, door bell etc, was very impressive but sadly wasn't allowed to take photos, the worse thing about it when the covers was off it was like a bird's nest inside, no pride in the work, took the sparky all day to make it look nice while doing the EICR, but when we return to the site I'll see if photos can be taken
Here in India, most homes are supplied with a 3 phase supply, so this is pretty much the standard, except there’s no busbar linking all the lines together.
Good idea but I think it is a copy of what the Americans call a beaker panel, can’t see much use for it in the Uk unless you are working on a ten bedroom mansion . I like the idea of it though. Another great video from Gary and the eFix team thank you 👍
I am in the middle of installing this same board for an initial 3 phase system, but the customer doesn't need 3 phases for what they require it for (long story). Anyway, I have the same isolator and conversion kit, but it doesn't seem to fit. Before I take it back, do you have any other advice? The instructions and diagram that came with it are really poor, but it seems simple enough in the video to install. Love the you tube videos BTW!
Another good video gaz .. is there any regulations about the right way to supply rooms in building by multiple line source becuse we here in my country each room had 3 way circuit , first for air conditioning that work on the national electricity and second for socket outlet that works on all electricity sources , third one the light that work on solar energy by convert 24 volt DC battery in inverter to 240 volt and goes to light circuit .. this system make our houses using multiple sources becuse national electricity have issues and not supply for 24 hours in a single day .. 😆
Wow some fantastic points to consider Ahmed. Most domestic properties have only a single phase supply however solar PV and DC storage is starting to be considered for the domestic market 👍.
Never been a fan of the double decker consumer units. See so many poor designs leading to nuisance rcd tripping. Will enquire about this product on my next large domestic job.
Are you seeing these poping up in new builds. Interesting if 3 phase supplies are getting into residential homes. Do you see 3 phases in flats or generally commercial?
Western Power are looking at going with 3 Phase heads on all new properties soon but with only one phase for the property. That way in the future they can come around and swap phases to balance the phases if one starts to get overloaded due to lots of EV charging on one phase.
I did one of these once in a 16 room HMO. Used an 8-way wylex board Ideal for the job and load. The only difference was I ended up using a 3-phase supply as a single 80/100A just wasnt enough. Otherwise exactly the same using all RCBOs. I guess thats the only disadvantage. Your stuck with RCBOs for most circuits. Shame about the cost - About £800 all in including the unit.
It might be sencible to people to have 3 phase they might have more than one charger or showers How much more expensive will 3 phase be to have in the property
Maybe worth s question when pricing up. Are you going to buy an electric car in the next day 7-10 years? Are you thinking of extending? Then this bored would be a good fit. Also they can later have three phase installed if they want a better ev charger
OK ... Let's count up ... 3 x 32A final rings (up, down, kitchen) 1x 40 A shed/garage feed, 1 x 45 A cooker feed, 3 x 6A lighting circuits, 1x16A fridge/freezer dedicated RCBO radial, 2 x RCD Breakers (63A & 80A), 1 x surge protector, 1 x AFD, 1 x 2-pole incoming isolator that lot requires a total of 19 positions. A normal 14 way CU has 16 (2 for the isolator) ... That is for our MEDIUM sized 3 bed!! WHAT were you saying about NOT going to need more in Milton Keynes? Oh! Yes, a double stacked CU! Hmmm. Now THAT means 4 ways gone out of each level for separate AFD & anti surge plus 2 more for an RCD (63A & 80A) that leaves 6 ways ... WOW! ALL that extra money and all I get is ONE extra way per level! Someone needs to do some SERIOUS thinking about layout in these things! The three phase to single phase conversion is nice BUT it would be FAR better if there were 3 din rails horizontally 2 levels of 12 ways plus the included 2 pole 100A isolator at the bottom, plus 1 rail at the top incorporating a full isolator for everything, a SINGLE AFD and a SINGLE surge protector for the whole system leaving 8 ways for additions to the din rail like wifi or Ethernet energy monitor, doorbell transformer, home automation controller etc. The bottom rails also having plenty of spare rail space for whatever. If customers are going to need more ways in the future it will be for more circuits not necessarily more power. With the move to LED lighting 6A circuits barely consume 2A - mine doesn't use more than 1.5A if I turn on EVERY light on the downstairs circuit. The standard 14 way CU (a falsely advertised piece of kit if ever there was once since it ONLY provides 10 ways!!) Is TOTALLY inadequate these days for the 18th edition and the proposed other changes (it's been inadequate since the 16th edition). It's about time a BETTER, more spacious CU was available as a standard single phase box without having to spend extra to "downgrade" a three phase box! 🤔😲😱😥😥
So for new build with 2 x 3 phase 22kw car chargers and rest of house is single phase, can it be done with out the expensive rcbo and just cheaper MCBs
@@efixx its actually 240 single phase but our transformers cut that in half so its +phase 120 - phase 120 neutral wire in the center- for our larger 240 volts balanced load no neutral required. czcams.com/video/jMmUoZh3Hq4/video.html (really good short video of our system)
why would you not want to use all three phases? in Norway its common practice to use all three phases plus N on a TN distribution. that way we get away with much smaller main fuse. is it because you only have access to a single phase from the distributor? also this does not have much to do with this, but we use fuses where the N goes through the fuse along with the 1Phase, therefor them being bigger. taking up two slots instead of one. I wonder why that is. I know they do it like here in the video, in America also.
Find one! I tried. Given up! Designing & building my own with more and better safety and monitoring features than are available ANYWHERE! Using a standard empty steel box, added din rails, EXTERNAL overall 100A isolator/contactor. PLENTY of space for ALL the automation, individual circuit voltage, current and power monitoring and control. Box overtemp monitoring with main feed auto cutout what CU have you EVER seen with that? (MCB's have burnt out causing fires before now!!) and lots more. The IET (I've been a full member for over 45 years) are luddites when it comes to domestic electric safety - WHY is there STILL no overtemp (60°C!) auto isolation and alarm INSIDE a CU if that's where so many fires start? Supposedly the reason why we went back to steel boxes! DOH!
I’m sounding like a newb but can you fit contactors on the rail and gain access to both sides to wire them up? You mentioned electrician heating and I had to use 2 boards due to contactors and the spacing they require for the heat dissipation. Cheers
Gary. You promoting torque setting drivers on every video you say that 100 times Just joking but. Still not getting used as much according to assessors
I don't get why you wouldn't just leave it as three phase if it was feeding say something like a mansion. Whats the advantage of making it single phase?
One disadvantage of 3 phase at 230v line voltage in small dwellings is the potential hazard of having 400v difference between, for just one example, sockets separated by less than 2 metres. Modern RCBOs and good design have presumably reduced the risk of direct contact. Not yet sure of the relevant regulations in the current 18th edition of BS7671 (UK). Presumably a high predicted load for large mansions will automatically necessitate a 3-phase supply.
So you have just ignored cascading? Your incoming supply is say 100A and your triple pole isolator is 125A. So draw 40A through each pole and the incoming fuse/breaker will trip and not your isolator! Don't like this idea at all. What is with the UK? Why on earth would you use single phase anyway? Just get three phase. Much better for capacity and for voltage balance. Plus if one phase goes down (been there many times), you still have some power.
@@efixx Great idea for more circuits. I know all about that. My house has 10 distribution boards of various sizes. Four main ones with RCD and the rest sub boards from those. Three phase 80A per phase. So what do you do for overload protection? Just rely on the DNO breaker or fuse?
Very interesting and something as a consumer I'm surprised hasn't happened more. Love the short and sweet format, max information delivery without losing attention..
Thanks for the positive feedback (Gaz) 👍
Really a great alternative to double stack units, much better I think.
Definitely..
Such a much better idea,than a double stacker, seen it done with other three phase boards converted to single phase,,but I'm surprised it isn't more popular option.
Totally agree.
I've done this a few times, Contactum TPN boards are very good value. There are a few easy pitfalls to be aware of, only use 10Ka RCBOs as the fly lead's are too short on the 6Ka to reach around the larger DB. Make sure to purchase the TPN blanks as they have a little gromet to hold them in place on the bus bar. Lastly the conversion system is OK but not great, I prefer to use a service connection block to bridge the 3 phase bus as a 25mm2 conductor seems to easily slip out when using the linking kit.
Otherwise a great way to have a large number of separate RCBO circuit's.
Good video 👍
Thanks for the detailed feedback George 👍
Top comment bro
I know they do this before in commercial installations. Been in many 3 phase boards where there has only been 1 phase and majority of circuits are live. It was only a matter of time before they did it for domestic premises. Love the fact there is a sticker for the torque settings. Although the domestic scene is going to need these larger units soon with all the stickers you need to place on them! 🤣
Really good idea and having room to split out individual circuits is very sensible
Did a commercial job like this once. All came populated from manufacturer with the link in. Except the comms room was tpn supply and when the spark (not me) energized it, he proved the pfc at the isolator by a large auditable and visual indication of that copper link going KABLEWEEE.
Ah, good one. Went down the line looking for electrical ineptitude and found it.
Leamington Spa? David Savery will be installing these then! lol
Dave Pusey that’s why I said it... “Royal Leamington Spa” should have been David’s response 😁
Defo the way forward from the double stack. 👍👌 great video.
That sticker is brilliant, hopefully not long till others follow suit.
Well it's about time! Torque setting labels already in a consumer unit / distribution board. I don't think I am the only person who gets fed up looking on manufacturers websites for the torque settings. It only takes one to lead the way... I wonder though if those who are yet to do it will use permanent labels or markings. Also would be great for the torque settings to be marked on the circuit breakers - Then you could populate a CU/DB with different branded breakers to the brand of the CU if able to.
Very similar in physical size to an average, home distribution panel in a US house. Like the idea of DIN rail mounting. Surprised that the main breaker also switches the neutral.
This is a good idea for properties which have a lot of circuits. I live in a property with two consumer units and 38 circuits. It’s quite a large place, there is a lot of circuits because of keeping things easy in case of a fault in the future as there it’s a large place.
Thanks for the great comment
Thanks. I wired and designed the installation. I felt that it was better with lots of more localised radials than big large ring circuits.
I’ve been installing three-phase board as a single phase converted board for the past 10 years in most four bed plus house sizes specially in London extremely easy to do. Only downside is the cost of the RCBO
Would do this on my future home with solar, batteries, and maybe a pool - can dream. Should lock your white balance BTW.
just think in n.america this is a normal size panel for us lot of room lot of spaces for glands tht you UK sparks seem to hate lol. all of our cables coming into panelboard need to be glanded and secured with in like 8 inches of it too. things i love about your wiring -Armored underground cabling ,switches on outlets, your connecting blocks over our twist caps and the newest one your use of din-rail connectors for panelboard j-box extensions.
I like the sleeving over the ground wire that is applied in the UK. Actually, I think that it would be nice if cable manufacturers would just insulate the ground wires and be done with it. Once breaker panels get big enough and have enough wires inside then bare USA ground wires can be a pain sometimes when working on a live panel - mainly when replacing an old cable whose wires are often at the back of all the others.
@@JasonEDragon i just realized over in the uk you have so few circuits tht yes you seem to have to move and add breakers where yes having earths sheathed makes sense where as in the us panels it may be a pain in the ass to get to but many circuits are never touched we seem to have panels from the old edison fuses still in full operation.
i have a couple of times sleeved my grounds usually in j-boxes with multi circuits or device boxes with max wire fill.
with your example though if i ever redo my panel or a close frnds i might think about getting some sleeving for the panel earths🤔😉
4:11 I suppose you could print out your own label with the torque settings on?
Must admit, i prefer the wylex NHSPAK conversion kit, comes with a single phase main switch so it looks like it was made for purpose rather than being converted .. ocd in me strikes again.. however, the torque setting sticker is a fantastic addition... well done lads
Sticker such an easy solution - Sherlock Holmes needed to find some torque settings
@@efixx yep.. its such a simple thing, but one hell of a benefit for an installer /service tech .. it's prompted me to always carry a label maker ... as it will save me loads of time if i ever have to go back to a job
I'll have you know, I'm literally about to have one of these fitted in my 3 bed semi in Royal Leamington Spa!!
I once did a house that had a 3 phase incoming supply with 3 electric meters were I fitted 3 consumer units , The house had 8 bedroom , it then a had a workshop attached to the house were the guy run his business from and his wife run her business from a set of offices from . Each business had to be billed separately from each offer and the house had to have it's own electric bill
Ahhh love that sticker cos we know as soon as we walk away those instructions will be filed in the shiny chrome bin in the office 👍 no whia speedy 2 Gaz 🤗
I hope Contactum manage to bring out mini RCBOs soon, ideally without needing the functional earth connection, as that's my only gripe about their boards at the moment...
We will ask the question !
Your working with your Heart,You an left hander 😊
With more room inside the board for almost the same footprint it's a no brainer
Great idea, would prefer to install this than a stacker board, just i wonder how much the cost difference is?
Also a great idea from contactum about the torque settings,
Thanks for the positive comment Sean
I can see newer domestic supplies being 3/2P + N with the rise of EV charging, It's already common in Europe to have a 40A 3P + N supply
DNO replaced old biscuit tin cutout here,they offered me a free upgrade to 3 phase,think it was 3x80A.
@@stuartandrews4344 wow
nice
Why are torque settings not etched into the plastic above or below the relevant terminal? Can still have a sticker but this way if a breaker, main switch etc is moved out into something else the torque setting is then transferred with it
Excellent idea to compliment manufacturers who have now decided to publicise their own recommended torque values in 'paper' format.
I'm sure I've seen a very well stacked up Proteus board, if I remember it was YXL??? Type boards stacked 6 high, was almost fully loaded with not just RCBO but with RCD, MCB, digital and analogue timers, contactors, door bell etc, was very impressive but sadly wasn't allowed to take photos, the worse thing about it when the covers was off it was like a bird's nest inside, no pride in the work, took the sparky all day to make it look nice while doing the EICR, but when we return to the site I'll see if photos can be taken
Thanks for the detailed message 🦾
Really helpful. Thanks
Here in India, most homes are supplied with a 3 phase supply, so this is pretty much the standard, except there’s no busbar linking all the lines together.
Good idea but I think it is a copy of what the Americans call a beaker panel, can’t see much use for it in the Uk unless you are working on a ten bedroom mansion . I like the idea of it though.
Another great video from Gary and the eFix team thank you 👍
I am in the middle of installing this same board for an initial 3 phase system, but the customer doesn't need 3 phases for what they require it for (long story). Anyway, I have the same isolator and conversion kit, but it doesn't seem to fit. Before I take it back, do you have any other advice? The instructions and diagram that came with it are really poor, but it seems simple enough in the video to install. Love the you tube videos BTW!
Does it matter which of the 3 phases you connect in when you terminate it?
Could this be used on a new build where the DOB are supplying in 3 phase and I only need a single phase
Another good video gaz .. is there any regulations about the right way to supply rooms in building by multiple line source becuse we here in my country each room had 3 way circuit , first for air conditioning that work on the national electricity and second for socket outlet that works on all electricity sources , third one the light that work on solar energy by convert 24 volt DC battery in inverter to 240 volt and goes to light circuit .. this system make our houses using multiple sources becuse national electricity have issues and not supply for 24 hours in a single day .. 😆
Wow some fantastic points to consider Ahmed. Most domestic properties have only a single phase supply however solar PV and DC storage is starting to be considered for the domestic market 👍.
Never been a fan of the double decker consumer units. See so many poor designs leading to nuisance rcd tripping. Will enquire about this product on my next large domestic job.
👍
Are you seeing these poping up in new builds. Interesting if 3 phase supplies are getting into residential homes. Do you see 3 phases in flats or generally commercial?
Western Power are looking at going with 3 Phase heads on all new properties soon but with only one phase for the property. That way in the future they can come around and swap phases to balance the phases if one starts to get overloaded due to lots of EV charging on one phase.
I have always had 3 phase installed to new build blocks of flats. I am a PM rather than a sparky.
I did one of these once in a 16 room HMO. Used an 8-way wylex board Ideal for the job and load. The only difference was I ended up using a 3-phase supply as a single 80/100A just wasnt enough. Otherwise exactly the same using all RCBOs. I guess thats the only disadvantage. Your stuck with RCBOs for most circuits. Shame about the cost - About £800 all in including the unit.
Another good video. Cheers Gaz
Gaz going to fit one in a few weeks 🖒
Can those rcbos be mounted on a din rail?
Thanks for the great video.
It might be sencible to people to have 3 phase they might have more than one charger or showers
How much more expensive will 3 phase be to have in the property
Families often have more than one car so charging will be a problem
With electric cars more popular now and increasesing
in the states im recommending pple look into 400 amp services mind you thts 800 amps total for e/v charging
Spot on!
Plus you reduce voltage drop and neutral currents.
I've got three phase and the neutral very rarely runs at 20A even with lots running.
Great Video Gaz. Thanks
Thanks Brian
Maybe worth s question when pricing up. Are you going to buy an electric car in the next day 7-10 years? Are you thinking of extending? Then this bored would be a good fit. Also they can later have three phase installed if they want a better ev charger
where would you install the spd?
OK ... Let's count up ... 3 x 32A final rings (up, down, kitchen) 1x 40 A shed/garage feed, 1 x 45 A cooker feed, 3 x 6A lighting circuits, 1x16A fridge/freezer dedicated RCBO radial, 2 x RCD Breakers (63A & 80A), 1 x surge protector, 1 x AFD, 1 x 2-pole incoming isolator that lot requires a total of 19 positions. A normal 14 way CU has 16 (2 for the isolator) ... That is for our MEDIUM sized 3 bed!! WHAT were you saying about NOT going to need more in Milton Keynes? Oh! Yes, a double stacked CU! Hmmm. Now THAT means 4 ways gone out of each level for separate AFD & anti surge plus 2 more for an RCD (63A & 80A) that leaves 6 ways ... WOW! ALL that extra money and all I get is ONE extra way per level!
Someone needs to do some SERIOUS thinking about layout in these things! The three phase to single phase conversion is nice BUT it would be FAR better if there were 3 din rails horizontally 2 levels of 12 ways plus the included 2 pole 100A isolator at the bottom, plus 1 rail at the top incorporating a full isolator for everything, a SINGLE AFD and a SINGLE surge protector for the whole system leaving 8 ways for additions to the din rail like wifi or Ethernet energy monitor, doorbell transformer, home automation controller etc.
The bottom rails also having plenty of spare rail space for whatever.
If customers are going to need more ways in the future it will be for more circuits not necessarily more power.
With the move to LED lighting 6A circuits barely consume 2A - mine doesn't use more than 1.5A if I turn on EVERY light on the downstairs circuit.
The standard 14 way CU (a falsely advertised piece of kit if ever there was once since it ONLY provides 10 ways!!) Is TOTALLY inadequate these days for the 18th edition and the proposed other changes (it's been inadequate since the 16th edition). It's about time a BETTER, more spacious CU was available as a standard single phase box without having to spend extra to "downgrade" a three phase box! 🤔😲😱😥😥
Pls consider a possible overload of the N cable as the current of all 3 phases will be added up!!!
Max in UK is 100A
So for new build with 2 x 3 phase 22kw car chargers and rest of house is single phase, can it be done with out the expensive rcbo and just cheaper MCBs
that panel is the same size as mine here in the US! except I have a 200Amp Main!
Do you use single phase at 120VAC?
@@efixx it can be if you wire it that way....
@@efixx its actually 240 single phase but our transformers cut that in half so its +phase 120
- phase 120 neutral wire in the center- for our larger 240 volts balanced load no neutral required. czcams.com/video/jMmUoZh3Hq4/video.html (really good short video of our system)
What the difference between putting the circuit breaker on l1 l2 or l3
No difference once converted to single phase operation
why would you not want to use all three phases? in Norway its common practice to use all three phases plus N on a TN distribution. that way we get away with much smaller main fuse. is it because you only have access to a single phase from the distributor? also this does not have much to do with this, but we use fuses where the N goes through the fuse along with the 1Phase, therefor them being bigger. taking up two slots instead of one. I wonder why that is. I know they do it like here in the video, in America also.
How much they charging for a bit of plastic, copper and vinyl then? Gonna have to get out the label printer and make some torque stickers!
A really good idea
Surely you’d just buy a large single phase board in most circumstances or a dual
Find one! I tried. Given up! Designing & building my own with more and better safety and monitoring features than are available ANYWHERE! Using a standard empty steel box, added din rails, EXTERNAL overall 100A isolator/contactor.
PLENTY of space for ALL the automation, individual circuit voltage, current and power monitoring and control. Box overtemp monitoring with main feed auto cutout what CU have you EVER seen with that? (MCB's have burnt out causing fires before now!!) and lots more.
The IET (I've been a full member for over 45 years) are luddites when it comes to domestic electric safety - WHY is there STILL no overtemp (60°C!) auto isolation and alarm INSIDE a CU if that's where so many fires start? Supposedly the reason why we went back to steel boxes! DOH!
Gaz, is it ok to use twin and earth for these type of boards? Or is it best to stick to singles?
You can use T&E
What about the requirement for surge protection.
I’m sounding like a newb but can you fit contactors on the rail and gain access to both sides to wire them up?
You mentioned electrician heating and I had to use 2 boards due to contactors and the spacing they require for the heat dissipation. Cheers
Yes you can
Gary. You promoting torque setting drivers on every video you say that 100 times Just joking but. Still not getting used as much according to assessors
I don't get why you wouldn't just leave it as three phase if it was feeding say something like a mansion. Whats the advantage of making it single phase?
One disadvantage of 3 phase at 230v line voltage in small dwellings is the potential hazard of having 400v difference between, for just one example, sockets separated by less than 2 metres. Modern RCBOs and good design have presumably reduced the risk of direct contact. Not yet sure of the relevant regulations in the current 18th edition of BS7671 (UK).
Presumably a high predicted load for large mansions will automatically necessitate a 3-phase supply.
What size is your single phase fuse?
Maximum 100A @230vac
Torque, torque, talk
So you have just ignored cascading?
Your incoming supply is say 100A and your triple pole isolator is 125A.
So draw 40A through each pole and the incoming fuse/breaker will trip and not your isolator!
Don't like this idea at all.
What is with the UK?
Why on earth would you use single phase anyway?
Just get three phase. Much better for capacity and for voltage balance.
Plus if one phase goes down (been there many times), you still have some power.
99.9% of homes in the UK are single phase. This is just a way to utilise a three phase board on a single phase supply to gain more outgoing circuits.
@@efixx Great idea for more circuits. I know all about that.
My house has 10 distribution boards of various sizes. Four main ones with RCD and the rest sub boards from those.
Three phase 80A per phase.
So what do you do for overload protection?
Just rely on the DNO breaker or fuse?
Shame the rcbos still have the functional earth on them.
Yes the pesky FE’s