EV CHARGER installation UK - can you connect to an existing CONSUMER UNIT?

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We look at some of the electrical design considerations when installing an EV charger with an existing electrical installation.
We review the choice of RCD, availability of matching MCBs and the option to add a surge protection device.
We also look at the meter tails and how they've been split to add a new consumer unit.
== 🕐 Time Stamps - Cut to the action 🕕 ==
00:00 Connecting an EV charger to an existing consumer unit
00:54 What's the problem with type AC RCD's
01:30 No need for RCD protection as the cable is clipped direct
01:56 Can you get an existing MCB?
02:40 New consumer unit best option for this installation.
03:00 A great opportunity to add a surge protection device
04:20 Where's the labels Gaz?
05:00 Short conductors for surge protection device
05:30 Splitting meter tails for the new consumer unit.
08:00 Current transformer for demand management
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📹 Presented by
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#efixx #evcharging #bs7671

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13 июн 2024

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Комментарии : 475

@efixx 3 года назад

Installing and EV charger - WATCH THIS FIRST 👉ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-wnmW6W9j80I.html

@yordannedelchev4784 Год назад

Hello eFIXX. I have a question unrelated to the video, but since I'm getting different answers everywhere I look I am kinda desperate and I know you guys will be able to answer it. Can tinned copper lugs be used with an aluminum cable?

@peterryan7827 3 года назад

Speaking as a non electrician, but as a retired plumber,I found this very interesting, from the point that We now know how it should be done, and it is a little more complicated to do than I thought, especially that surge control. thanks a lot for this one.

@damianrobinson2524 Год назад

you were gonna try and knock one in yourself wernt ya hahaha

@dvrn86 2 года назад

Great video lads. Really helps with keeping the knowledge in the trade up to current standards 👌

@lesmoor001 3 года назад

i feel humbled by his level of knowledge

@efixx 3 года назад

He's a clever bloke old Gaz. Joe

@WhiskeyGulf71 3 года назад

Seems like it would have been easier & cheaper to have upgraded the existing domestic consumer unit to the current standard that requires it to be housed in a metallic casing, that way the property’s up to current code, no issue with matching breakers & a nice simple installation with much safer RCBOs.

@cglees Год назад

Considerably more expensive though

@G_Zero127 10 месяцев назад

Customer never wants to spend 💷💷

@mikekirwin3720 3 года назад

The tails inside the meter cupboard needed identifying, ie L or N or Brown or Blue, great video. Looking forward to more videos on this very hot topic.

@niceguy235uk1 3 года назад

Why do they?

@JaysScript 2 года назад

@@niceguy235uk1 why don't they?

@englishbob5106 2 года назад

🤔

@doctorelectric470 3 года назад

good video lads, just shows there are lots to consider when fitting an EV charger

@thinklist Год назад

So glad you touched on Type Testing

@veronicathecow 3 года назад

Excellent video, thank you.

@earlyyearslearningisfun 3 года назад

Fantastic video Gaz and Joe 👍

@JimRuggEV 3 года назад

Very informative video as always Gaz and Joe!

@paulbadcock8237 2 года назад

Excellent - very clear explanation

@jwillisbarrie 2 года назад

Thanks for adding captions for the Deaf. Makes your video much clearer and better to understand, gave video a like and subscribed.

@efixx 2 года назад

Thanks Jim 👍🏻

@safeswitchelectricalltd9311 3 года назад

Great video as always, quick question on the SPD. I appreciate that model is advertised as 'universal', but is that enough? Do you need to confirm with the CU manufacturer, in this case Crabtree, that they are happy for it to be installed in their board? So far I have not found a CU manufacturer who has written in their instruction that a universal SPD can be used. They all state that only their own can be used. I'd love to find one that allows this!

@petertallowin6406 3 года назад

Another top notch video guys. I do love a Starbreaker board.....

@oliverduff681 3 года назад

For those Hager boards - the MT-series MCBs (and the new ADA series compact RCBOs) will - per Hager's technical department - fit in the older plastic CUs as well as the newer Design 10 and Design 30 metal CUs.

@rtelectrical9574 2 года назад

Exactly

@chrisoxley6631 Год назад

One may argue that this translates to a lot less hours, given it is extremely straight forward.

@cuebj 3 года назад

Further to longer comment about difficulty in finding good electricians, I've found you can put 3 electricians in room and watch a pretty heated row involving 4 different ways of doing something, each swearing the regs say different things and slagging off each other's choice of fitting.

@andywarrington4738 2 года назад

thats because most new electricians are lost in too many technical bullshit items , rule of thumb , consult the regs and use some common bloody sense

@markkennard861 2 года назад

Way down here in NZ everything must be on RCDs.. apart from fixed appliances like oven and hot water. Average house will have at least 3x RCD. That cable clipped to the timber would not comply. Interesting to see how other countries do things..

@Mark-ij2nh 2 года назад

Regs are a big updated con sometimes they make you do an entire course for only a few pages added from the previous regs ie 18th from 17th. Also there are SO many Electricians who wire differently and its a headache as we all have different ways of wiring. Surge protection can be nonsense as alot of new devices have built in surge protection inside the circuits in new electric cars and electronic components in entertainment products. Also it depends how fast you want to charge your vehicle. I know someone who wanted 16mm cable to charge there car. Which can carry from 57 to 85 Amps. Even your shower doesn't need that.

@voxpopneverdies2025 2 года назад

I'm a Yorkshire Electrician, God said I can't be wrong even when I'm wrong

@deang5622 Год назад

@@andywarrington4738 It's because electricians are not trained well enough. Many really don't understand electricity, but because they are electricians and have had some limited amount of training, they think they know it all. Put those electricians in a room with qualified electrical engineers and they lose every time.

@stokiesparky2790 3 года назад

Awesome video. Learnt a lot there. Thank you efixx

@jamiebourne8047 2 года назад

Interesting, although the meter end looked ropey to me, straggly tails unsupported or colour identified ..

@j.p289 3 года назад

Another fantastic video!

@efixx 3 года назад

Thanks

@artisanelectrics 3 года назад

Great video guys! 👍

@efixx 3 года назад

Thanks Jordan. 😊

@harrycollins4347 3 года назад

I see a Zappi, is that an Artisan special!!!

@paulprescott7913 3 года назад

Thanks to Jordan and his vids, if im asked for a car charger now. I recommend the Zappi and its features. And significantly better delivery than another brand. Hasten to say that im not brown nosing Jordan, its just a better unit and thats clear to see.

@artisanelectrics 3 года назад

@@paulprescott7913 Thanks Paul!

@artisanelectrics 3 года назад

@@harrycollins4347 I didn't install this one but its a lovely looking install!

@mikebolt9753 3 года назад

Very Informative

@adrianmorning.1555 5 месяцев назад

Brilliant I'm gonna set one up soon

@TheHawkeye001 3 года назад

Re: Using the same type of breaker topic around 2:05 mark - when electricians install new CU's' is it standard practice to advise the customer to have some spare MCB's/RCBO's in case new circuits are added in future? As a homeowner I just assumed I could always get hold of a breaker from the same manufacturer and it would be backwards compatible

@pythongrun 3 года назад

Great video. Sadly cancelled my EV Charge Point install today after contractor tried to rip me off.

@NickW1111 3 года назад

Does the earth Henley block become a main earth terminal and so need a Safety Electrical Earth label by it?

@terencewright2223 3 года назад

Excellent video, thank you. Keep up the good work. Do you have any videos on solar panels and storage power units?

@efixx 3 года назад

thanks 🙏 We have this one on inverters, which links to one on battery storage - ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-2airJ2cc9vI.html

@grahamturner6119 2 года назад

Ýea but you said nothing. More In meter box but what about e 3 connector blocks you have contradicted your selves

@christastic100 3 года назад

Something to note is some manufacturers now suggest a 40 amp MCB for surge device. Definitely would seal the meter cabinet holes , but it looks very neat . Can I ask if the RCD protection was built into the charger and last time I did an EV point it was made TT . As always a great useful vlog

@efixx 3 года назад

Inside the Zappi 2 smart electric vehicle EV charger which doesn't need an earth rod on TNCS systems ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-gwmiGf6tChE.html Great technology in the Zappi hence no earth rod required...

@paulmanning9540 3 года назад

Get on E-bay for old breakers. There is usually some bright spark that saves them off old boards and sells them on.

@mikeselectricstuff 3 года назад

Isn't the main reason for using a seperate CU that the installer doesn't have to take responsibility for the condition of the existing CU? For a 32A chargepoint, wouldn't it be better to use a 40A breaker to avoid any nuisance trips - a 32A breaker at full load for hours on end doesn't seem like a great idea for long-term reliability.

@BezosAutomaticEye 3 года назад

Hello. The chaps didn't mention in the video what the Zappi max current draw was set at, it may be limited at the charge point to lower than 32. Also - wouldn't the overcurrent have to be between 3 - 5 times the MCB rating?

@BezosAutomaticEye 3 года назад

@@johnhoward2104 cheers I was getting mixed between the two. Back to 7671...

@brad30 3 года назад

Manufacturer instructions say B32 MCB for overload protection.

@edc1569 3 года назад

I believe J1772 calls for 30A max?

@mickbitchum4664 3 года назад

Totally agree. MCB's at full load for 10 hours or so is never a great idea. Myenergi do specify a 40A MCB in their instructions, there's a lot of sparks installing on a 32A though I've noticed.

@digitaria 3 года назад

Has the house got LED down lights? Those causes dc leakage issues too. I would always recommend a new consumer unit. Wouldn't a time delayed rcd solve the selectivity issue? Where are the Isolation switches at the meter? How much did the DNO charge to pull the fuse?

@Poorlybobsdad Год назад

That’s a nice install but it seems a large extra cost for a new consumer unit and main fuse mods for the sake of tracking down the right Hager MCB on the existing none RCD side. Is that the only reason why you wouldn’t come off that spare way?

@MarkBateman Год назад

So can you explain why you cant just change out the AC RCD on the existing board for a Type A and then add a 40amp MCB for the EV circuit? Thanks

@TwoEsk8Riders 2 года назад

Have you used a 2.5 out of the 32a MCB feeding the surge protection ? Is that too small ?

@gbelectricks 3 года назад

Just to throw a potential spanner into the works!! Are the tails, both the new set and the old set, run through the wall cavity? And, if this is the case, do these tails require additional protection?

@efixx 3 года назад

I wouldn't say so, they're not buried in the wall feeding an accessory, they come through in a straight line and are clearly visible. You'd have to actively be trying to drill into them. 👍

@markpowell1456 Год назад

Could you please explain why the supply cable to the ev charger could be non RCD protected? You indicated that as it's clipped direct to the fabric, it's not a requirement? I was under the impression all domestic circuits now have to be 30ma protected?

@efixx Год назад

If the cable is surface clipped, visible and unlikely to be damaged then you don’t require an RCD.

@RuchOporuElektryk 6 месяцев назад

@@efixx Guys, can we have a pointer to regs regarding this? It seems like a strange exception for a T+E cable loaded with 32A for hours and supplying "socket-outlet for current-using equipment for use outside" and protected only by a built-in RCD without any physical means of testing...

@gino2465 2 года назад

Hi guys another great video, may I ask what was the distance from the cut out to the new cu installed.

@efixx 2 года назад

It consumer unit is almost directly behind the meter box -.so 1.5m tails.

@alanmarriott9216 8 месяцев назад

What happened to isolator in meter/cutout cupboard?

@jamesmckelvie 3 месяца назад

Can pull main fuse.

@gap9992 3 года назад

Very informative, thanks for posting. . Am I right in thinking that anyone could just take out a single screw on the connector in the meter cupboard and be exposed to the tails where they are joined?

@efixx 3 года назад

I guess so, much like a light switch or a socket, anyone can undo two screws and access live parts.

@gap9992 3 года назад

@@efixx yes, that's true but are people much better protected downstream of the Consumer Unit? I am just a curious layman but I was expecting something like Fort Knox around those connections lol

@justdontgiveafukk 3 года назад

The issue here is someone is willingly opening that enclosure with a tool. If they aren't competent then they shouldn't be attempting to access that enclosure. They are making that decision...

@acelectricalsecurity 3 года назад

Yeah just like anyone can take a screw driver to any electrical accessory. Or put their finger inside the lamp holder on a pendant that has no lamp in and have access to live parts without the use of a tool.

@SCOPE_ON_THE_WING 7 месяцев назад

I love gary. What a man!!!

@ballamoto 2 года назад

Just watched your other video about looped systems. You mentioned that 2 cables coming in means a looped system, and that's trouble for EV chargers. Is this not a looped system then? As it has 2 cables coming into the property.

@paulbb27 3 года назад

Thanks for this video , very helpful 👍 I’m a qualified electrician did my exams back in 2000 /2002 but things have certainly changed since then!

@efixx 3 года назад

Thanks for watching and the kind words

@paulbb27 3 года назад

@@efixx reminds me of my apprenticeship days them Hager consumer units! Still got plenty of spare mcbs for them (with the black switches!) .

@jimmorris5700 2 года назад

Yep Paul they sure have , up 18 now more lolly for the examiners . Getting areal rip off for tradesmen , my son just done iphis 18 cert £650 ? I forget !

@nickbuckle646 3 года назад

I would have been inclined to use an adaptable box below original board and split the tails with line taps to feed other board and use a spd incorporated main switch in the meter box. Hager breakers do fit old consumer units so perhaps new board not required if SPD placed before original consumer unit.

@efixx 3 года назад

Always good to hear different engineering opinions. 👍

@acelectricalsecurity 3 года назад

Personally, if it were me, I would have used a spare way in the existing board, and if I had to install a SPD I would have used an in-line unit in its own enclosure, and not had any joints in the tails.

@russthebiker 3 года назад

Why no sealing wires on the Henley blocks ? nice and tidy way of supplying the Charger through a new CU, I have seen a few nasty ones over the last year or so

@NickW1111 3 года назад

On the subject of EV charger installation, I'd asked my DNO (Western Power) to check my service fuse rating as I'm looking at getting an EV. I've just come off the phone to the local office - they were very helpful and explained that the maximum they would fit is 80A. But, and as a policy that is only a couple of weeks old, if that is not adequate for an EV charger and the other house loads, they would upgrade the supply to 3 phase for free (3 X 80A). To say I was surprised is an understatement - I asked if this means they will dig up the road and was told yes. I said it sounds very German and she said that is what they are moving to, with a phase for the EV charger, a phase for the heat pump and one for the house. On new build they now provide a 3 phase incomer, blanking off 2 phases if only a single phase supply is required. Has anyone else heard this, or seen it in practice?

@acelectricalsecurity 3 года назад

That's a new one, but makes sense because of the obsession with the government's push for electric, which is not the silver bullet most think it is, but that's another issue. There was a time when suppliers wouldn't fit a 3 phase supply in a meter box, always had to go on an inside wall. Looks like they are going back to the old days, occasionally you come across 2 phases where one was used for heating.

@stuartandrews4344 3 года назад

Had cut out here replaced a few months ago, (Western Power) offered me the same upgrade the supply to 3 phase for free (3 X 80A) FOC.😲

@acelectricalsecurity 3 года назад

@Dark Dreamz it's supposed to be 400v now, but is still 415, that's between phases, you still have 230v phase to neutral.

@NickW1111 3 года назад

@@stuartandrews4344 Did you go for that, and if so, what have you installed as a consumer unit? The WPD document suggests 3 separate consumer units (or 2 of you only need 2 phases) and 3 phase DBs tend to be a bit big for domestic use.

@stuartandrews4344 3 года назад

@@NickW1111 Been very tempted, but I'm still mulling it over,as it would give me 80A for house, 80A for new workshop & 80A for EV charger,but COVID has delayed workshop build. Was it this WPD Document? www.westernpower.co.uk/downloads/3347

@Davidhjrick Год назад

I have an external 3pin socket at the front of my house. Can I leave the cable to my fuse box in place and just swap the external socket box with a 7KW EV charger box? 🤞🏻

@leevfx 2 года назад

This may be a daft question, but do you need to have it wired through your consumer board? I live in flats and it wouldn't be possible to wire it all up. We do however have our meter near where the EV charger would be installed. Why can't we just have a switch in the cabinet and not have it run into our flat?

@effervescence5664 3 года назад

Brilliant video as always though Hager, known for backwards compatibility of boards/devices possibly not the best choice for demonstration purposes.

@efixx 3 года назад

Spread the word on this - amazing how many folks ram any old breaker in.

@effervescence5664 3 года назад

@@efixx Seen that all too often with Wylex and other boards but not a usual thing with Hager down this way. Possibly people are just used to working on/with the brand more.

@paulprescott7913 3 года назад

@@efixx its a major problem isnt it. I did note that the existing hager board had a new style breaker in it.

@rtelectrical9574 2 года назад

The video shows a new Hager MCB type in the board already. 😂

@RichardSmith-xd2ck 2 года назад

Is this property on a looped supply as there are two cables entering the main fuse block?

@RustyRecovery 3 года назад

Good video. If the current consumer unit was new and the correct mcb could be sourced and inserted into a non rcd protected spare way, could that consumer unit be used instead of installing an additional one ?

@efixx 3 года назад

Yes that is one option - but a struggle if you want to add surge protection.

@Tom-Lahaye 3 года назад

When the EV charging station has its own RCD built in, is it connected to the main earth rail in your consumer box, or does it need another means to connect to earth (eg a separate earth pin)? Solar power systems can feed DC in your system as well, does the inverter have its own RCD protection like the charging station?

@efixx 3 года назад

It depends on how the manufacturer makes the charger. The Zappi 2 can be connected to the earth bar but others require an earth rod.

@CepheiVV 2 года назад

Did I get it wrong or there is no RCD protection all the way down from the mains panel to the charger unit? What does protect against residual current throughout all that length?

@Maddogonguitar 8 месяцев назад

..does the RCD being in the Charge point protect from PEN fault ?.. wouldnt usualy export the pme to external supplies

@aryehelectricalltd7247 2 года назад

why you consumer unit dont have a wood board in the back ? in one of you video you says was a regulation ? pls help me to understand by the was learn a lot from you video pls continue thanks

@jonny5514 3 месяца назад

So how to you go on when you don’t have an old style stopcock with visible bonding ? , I have a surestop switch under the sink in the Cuboard with no visible bonding as the pipes run behind the built in cuboard , council told me the old stopcock would have been cut out when the surestop switch was put in .

@ianmoss20102010 7 месяцев назад

should they have used a Crabtree surge protection as it would have been tested to work with the consumer unit?

@JC097 2 года назад

What if that was a TT system, then there would be no rcd protection on the main tails supplying the new consumer board and the the tails and it could be an excessive length from the mains head.

@smiffysmiffy123 2 года назад

No isolation switch, how was the system made safe for the Addition of new consumer unit?

@timearp8185 3 года назад

Great video, would you expect an installer to run through their plans with the customer or just get on with it? Considering most customers won't know what should or could be supplied? Please try to avoid the word 'obvious'! Soon as you say that you assuming which is never good..

@Gez492 4 месяца назад

Sorry if this is a dumb question but can you confirm why this isn't a looped supply please, it looks like it from the two cables going into the service head.

@fountainwell49man65 Год назад

Latest issue is that the onboard type A RCD within the charger may be non compliant meaning an RCD has to be fitted upstream. How will that work with your DC confusion?

@gregpidgeon2822 3 года назад

nice to see the circuits labelled in that new board...

@paullyons4624 3 года назад

Watch and LISTEN 👍🏻

@Khanjan-si8me Год назад

Hi help me please . What if we have RCBO fuseboard do i need used RCBO for ev charge or MCB ONLY since we have rcd in charge.

@intercity125 3 года назад

No mention of the PME/TN-C-S issue with an EV charger, I take it the Zappi has built in PEN fault detection?

@stuartandrews4344 3 года назад

It has built-in PEN fault technology,so no earth rod needed

@efixx 3 года назад

It sure does, no earth rod required. 👍

@mathman0101 3 года назад

I believe it’s has applied for a patent and been tested in a university lab not sure it has gone through other standard testing labs. Looks interesting technology though no real technical information on how this PEN technology is constructed and operates. Not if it would work even more effectively if earth fault path impedance was further lowered by adding an earth rod even though it does not need it.

@acelectricalsecurity 3 года назад

Why is everyone obsessed with a pme supply and ev's, really it's the networks problem not the installer. Plus, ask yourself what is the chance of the network dropping the neutral when the car is on charge and someone touching the car, it's got to be near impossible. The networks should be worried not the installer or car owner.

@westinthewest 3 года назад

@@acelectricalsecurity The DNO absolves itself of responsibility by stating that PME earths can't be exported outside the equipotential zone. I've read recently that loss of neutral is quite common and is often caused by cable thieves.

@SurreyAlan 3 года назад

Really interesting, from the horror photos my electrician shows me I suspect in most properties a rewire would be needed before even thinking about installing a charging point.

@TheEulerID 6 месяцев назад

One good reason to use an external CU is that the electrician installing the charging point doesn't have to poke too much into your domestic wiring, although I suppose if the DNO fuse is to be upgraded, then they might have to look at tails and bonding and once that starts, then heaven knows what they might find.

@chriswaites1222 2 месяца назад

Nonsense. We're lucky in the UK to have 230V AC with (mostly) a 100A main fuse to every home. This means almost every home will both have wiring capable of carrying 100A to the CU and an EV charging at 7kW to take only 1/3 of that power. Installing an extra CU is only recognising that whoever installed the home never envisaged ever needing all of that 100A, not that it's problematic to need it.

@1278rafferty Год назад

Hi guys iv just had a ev installed and iv noticed that the electrician has only used t&e 2.5mm cable to supply power to the charger its around the wall in trunking this cable to seems to small for my 7kw charger can you advise Thanks mark

@stusmithmmm 3 года назад

Great text book job

@efixx 3 года назад

Thanks

@12alocin 3 года назад

For years, a 7.2 kw shower came straight off the house consumer unit with a simple isolation switch, so exactly why are these changes been invented?

@jonathangurney8628 3 года назад

Guess the charger is running for much longer than a shower...

@jasonnonumber 2 года назад

I see that the service head is on a looped supply, does this mean the supply should be unlooped by the DNO before the EV point can be comissioned?

@markbradley5746 2 года назад

I clocked that as well... no mention of it in the vid was there 🤔

@acelectricalsecurity 3 года назад

With the RCD being built-in to the charger, how does the owner do a test on it, that is operate a manual test button, and do you carry out an RCD test as you would a regular stand alone RCD.

@JimWhitaker 3 года назад

Good question. Taking the front off that charger every three months would be a pain. ;-) Or does this just illustrate that three-monthly testing of RCD's is not really required?

@rusturuss123 Год назад

Excellent.

@efixx Год назад

Thanks

@jonathanbuzzard1376 8 месяцев назад

How does the surge protector work then? It's not a Crabtree device so it is surely not appropriate to fit in a Crabtree consumer unit? I would also be a bit disappointed if the EV charger didn't have surge protection built in.

@bea1365 Год назад

Do they charge you for electricity at commercial rate having an EV charger or is it residential rate?

@Mark-ij2nh 3 года назад

Have to be careful if a surge protective device is attached to ring mains or radials that have new electronic devices as they have their own protective device built into the power units and can actually cause an issue

@honestjohn8450 2 года назад

More reason,s not to get a e car at this time,Cannot see why we would when not enough charging points country wide and won,t be for a long long time yet.

@zu1875lu Год назад

So if relying on the rcd in the charger doesn't that mean the cable is not protected from board to charger??

@seanmcneill8899 3 года назад

Inside work very tidy, outside Meter box is so untidy, no clips and no labels on any of the cables.

@marklola12 3 года назад

This is all well and good on a house that is not overly old but what about a house that was built in 1979 lol apparently we need to have a new fuse or something since ours can not handle EV charging and its the original electrics, outside we do have a newer electric meter and gas meter installed but inside we have the original metal wall plate that has a row of black switches on to turn parts of the houses electric off. when i see videos about EV installations its always newer houses with the type of wall boxes shown at 0:43

@AndrewSmith-wh3lo Год назад

Hi chaps. Love your videos. I am doing the ev charging course next month and was wondering what you think of this option. I would like to install a hi-integrity split load board (eg Hager VML914CUSPD) with type A RCDs and a 40A MCB in one of the non-RCD protected module. I then plan to run a 10mm SWA glanded into the metal CU. I understand I will then need to add a length of suitably sized CPC from the gland on the EV charging point (which is made of plastic) to the earth terminal in the EV charging point. Am I right in thinking that I will not need to add a length of CPC to the gland on the metal consumer unit, as there is a very good fault path through the SWA armourings, through the body of the metal CU and onto the MET built into the CU? It seems to me that doing so would be unnecessary and would add a parallel CPC path of approx 30mm. Thanks and regards. Andrew

@AndrewSmith-wh3lo Год назад

I forgot to add, the 10mm SWA I plan to install is 2 core. Thanks again. Andrew

@TheEulerID 6 месяцев назад

Personally, I prefer the idea of an external CU, and definitely where you have an external meter cupboard unless there are some very specific circumstance. It means that the household and EV side of things can be kept almost wholly separate. It also minimises power loss in the cabling, avoids disturbing existing decoration and so on. In my case, it's definitely the route I would take as the back of my detached garage faces the house wall with the meter cupboard. Also, I can use it to rectify something I hate, which is that the existing SWA that feeds the garage is connected into the back of the ground floor ring circuit. It's 4mm, so at a stretch if might be enough for an EV charger with some sort of load control, but I think I will go for 5 way 6mm SWA which would allow for any future three-phase upgrade (and, in principle, when wired for single phase the two wires could be paralleled for each of the line and neutrals which I estimate would save around 60 watts on a 7.2 kW load). I just forsee me doing a lot of digging...

@lucypalmer 2 года назад

Hi there! Is it possible I might need a new commercial unit installed before an EV home charge point installation could be carried out? Thank you!

@efixx 2 года назад

New series looking at commercial / workplace charging coming soon.

@neil03051957 3 года назад

Great video. Just a question, is the SPD in lieu of the DC protection RDC DD & PEN fault device? As there is RCD protection in the charger it would be interesting to see what type.

@efixx 3 года назад

No the EV charger has all of the RCD and PEN protection built in. See this video 👉 ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-uUlyAMmGl5Y.html

@grantcollison221 Год назад

Be careful there is no BS number for the RCD onboard as yet so requires a double pole RCD

@emmetg888 3 года назад

Having two 100amp main mcbs on separate boards in the property allows a potentially combined flow of 200amps from one mains incoming 100amp supply can lead to overloading on the mains hrc no??

@ricocasilli3307 10 дней назад

@edglue6138 Год назад

Do you have to use A rated breaker with chargers?

@michael-ye5ks 11 месяцев назад

Is it possible to install when the property has only 63amp instead of 100amp

@tomooo2637 3 года назад

Does the zappi have DC rccd protection

@paulgerrard2529 8 месяцев назад

Is there a requirement for the main tails to be identified by blue/brown ?

@inputimmersion9577 3 года назад

Could you not just change the AC breaker for an A one and add it on that side?

@matthewwallace8781 3 года назад

Just to clarify. That SPD due to the conductor lenghts, it's designed to protect the EV charger and wouldn't be expected to be sufficient to protect the rest of the installation on the existing consumer unit?

@efixx 3 года назад

It would also offer a degree of protection to the rest of the installation. If possible fit as close to the incoming supply as possible.

@professorparrot3141 3 года назад

The tails going from my meter to the consumer unit are not 25mm but 16mm. I remember the meter installing telling me that. Does that mean I'd have to replace the 16mm if I wanted to one day get an EV charger installed ?

@efixx 3 года назад

Yes unless the demand from the rest of your house is very low and /or the service fuse is just 60Amps and you fit a charger which measures the power use at the supply intake - e.g the Zappi by Myenergi

@professorparrot3141 3 года назад

@@efixx Thanks.

@grumblewoof4721 3 года назад

I wonder about the suitability of the mains supply to a house and what load it can take. The cables that come down the street where I live are three phase with each phase going to a different set of houses (normal I think). Within a phase I could imagine houses all having a fast charging point for their EV, electric heating inside the house, electric hobs and cookers, washing machines, tumble dryers, dishwashers, toasters, kettles, fridges and TV's in multiple rooms ... and lights. What would happen if every household turned everything on at once and were fast charging their EV ? Could the mains supplies to the street handle that ? I ask because I have had several incidents in my street where the under ground wiring has failed and we have had outages while they repair it (digging holes). One incident caused a huge surge that overloaded my neighbours TV (on standby) and it caught fire in the early hours of the morning. Her and her family were nearly killed and my adjacent house, that is part of the terrace, suffered smoke damage. A number of residents had appliance damage as well, presumably on the phase that was effected. Given the larger number of EV's and charging points being fitted, is this a scenario we will see more of, particularly in older neighborhoods with doggy underground wiring ?

@andywarrington4738 2 года назад

all these electric vehicle points wont be possible yet due to supply constraints , it all looks good in a computer but the reality is far different

@johnlatchford9425 2 года назад

I heard an estimate that 30,000 Km of old underground wiring in residential streets will need replacing to allow EV charging.

@grumblewoof4721 2 года назад

@@johnlatchford9425 that sounds probanly an underestimate but on top of that wexwould likely need many more substations and a smart grid.

@MrLeecavturbo Год назад

Good video , it didn’t touch on the subject of rcd for tails.

@ausi14u Год назад

Surprised to see no bushing on the cable entries of the metering enclosure. Other than that seems ok(ish)

@cuebj 3 года назад

So how do you find a really good sparky who thinks, diagnoses, and communicates clearly with me with my 'A' level physics and, before regs changed, did a fair amount of household wiring following the books to the letter? I haven't found one who takes any time, cleans drill dust out of the back boxes, or listens to what I say. Contrast the excellent plasterers, plumbers, general builders I've used in south east London. With side, loft, and tear extensions, we have lots of lighting, power, shower, cooker circuits and want to plan for EV.

@efixx 3 года назад

See if they are on Instagram and see the quality of work that they post. We follow some inspirational electricians.

@supersparks9466 2 года назад

Well you havnt used me Steven, but I don’t work in east London so your search continues

@brendanpells912 2 года назад

How about fitting a kWh meter in the CU for the charge point, so the consumer can split out how much energy they're using for the EV? I visited an egg production unit years ago with inverter drives for the ventilation fans, the standard Hager RCD would trip out when you tried to run more than one fan. I suggested they fit an RCD designed to operate with Inverters, at the type it was a Schneider Si type.

@Gal1690 2 года назад

The smart chargers already tell you what energy is being produced. Zappi monitors the EV, house, solar and back up batteries and can divert the green energy directly to the car. Really good set up 😎

@taffytop 2 года назад

The EBO is only 3nk so the flow is 22ii if this on a TTD board the ohssies will phase the hept barriers everytime.

@markgilder9990 3 года назад

Zappi2 best unit on the market.

@stuartandrews4344 3 года назад

Nothing better.

@efixx 3 года назад

We love it. 👍

@seemyLeakypantsTV 3 года назад

Project EV are pretty decent as well. Has the same bells and whistles as Zappi.

@stuartandrews4344 3 года назад

@@seemyLeakypantsTV Zappi more stylish

@holmesjunction 3 года назад

6:07 The service head is mounted on a 'scrap' of chipboard screwed/wedged at an angle against the main mounting board (don't know when this was done). Should this have ever passed inspection?

@BezosAutomaticEye 3 года назад

I've seen alot that are like this. Is it to avoid two sharp bends in the main incomer if the cutout were mounted on the back board? don't know. Any DNOs on?

@NickW1111 3 года назад

I’ve that setup at home - the chipboard wedge is pretty solid and with the incomes being surface mounted and so coming in close to the front of the meter box, it makes for an easy path to the cut-out.

@efixx 3 года назад

What issue could it cause?

@Daniells1982 3 года назад

Quite common on new builds to see this. I assume it's the DNO that fit them as they fit the service head.

@holmesjunction 3 года назад

@@efixx - It brings the service head closer to the front, increasing potential of accidental damage or ingress of water (especially if door open or damaged). Is it an approved adaption to the fixing of items within a cabinet under BS7671 Certification (especially if it’s from new)?

@Mark-ij2nh 3 года назад

I would stick a nice 10mm T/E or even 16mm on either a 50A or 63A....future proof for higher KW EV

@joecoco88 Год назад

Can’t put a 10mm on a 50a

@jhangirhussain 3 года назад

The DC RCD in the evse will prevent blinding on upstream RCD so that shouldn't be a concern when deciding which side of consumer unit to use. Although it is still a good idea not to touch existing wiring if you can help it.