Tesla Wall Connector UK install

Installing a Tesla Wall Connector Chargepoint in the UK - with SFX!
Tesla have their own 'approved installers' for this kind of shebang, but they don't insist upon you using such. It's not a DIY job though; it has to be on it's own dedicated circuit with the right kind of overcurrent and shock protection, and the earthing and demand considerations need to be... well... considered. This sort of job requires certification, notification to Local Authority Building Control and notifiation to the District Network Operator.
Chargepoint earthing is a tricky issue at the best of times, and this was an unusual job where I was trying to comply with the regs, the CoP and the manufacturers' (sparse) instructions as well as the homeowner's expectations which made it challenging and meant that whichever way I did it could be viewed as questionable. It is possible to connect the rod back to the MET, but there are implications with doing that and keeping the touch voltage down which, in practice, means you need a ridiculously low Ra. We chose to TT the chargepoint and keep it isolated from the installation earthing which should be okay as it isn't possible to be in simultaneous contact with the vehicle and any point connected or bonded to the PME earthing at this site.
The RCD and MCB in the Lewden board look physically different as they're manufactured for Lewden's 'Control Gear' range (sometimes rebranded as store-own such as Denmans Curve). Lewden tech support confirmed it is just a rebadge and that Control Gear products can go into their enclosures. So why didn't I use the Lewden RCD shown towards the end of this video? Well, that snippet was filmed on a later date after I sourced the Lewden branded unit just to show for comparison in this video. That's how much I care about you, my beloved fucking audience.
I don't know how I didn't spot the 6mm cable coming from the tails when we were originally on site a few weeks ago; I must be going wire-blind. That fire suppression board is now powered from new 25mm tails from the Henley blocks which also serve DB1 and my Lewden board. Overkill? Sure. But I don't like the idea of thin wires one cannot isolate!
Dead testing of the SWA wasn't recorded on camera unfortunately, but was undertaken. The exterior Wiska box contains an earth block with the 2.5mm SWA CPC cores connected, a link wire for the SWA sheaths, the 6mm wire to the charger and a 16mm wire to the rod.
The black cores used as CPC within the SWA's could have been employed to increase the overall CSA to 7.5mm square for line/neutral with the armour used as the earthing for the SWA cable to allow full 32A operation, but there is regulation 434.4 to consider which permits conductors in parallel to be overcurrent protected from the load end as we've done here, but does go on to say "for more than two conductors in parallel, a fault current protective device shall be provided at the supply and load ends of each parallel conductor", so breaking into the extra core to deliver higher current would have potentially made things more complicated. The armour itself has an equivalent CSA of 19mm squared for each cable so would have sufficed as earthing; it wasn't necessary to have dedicated earth cores, especially as they don't go anywhere in this case. Still, current limiting the bugger is better for the DNO paperwork.
The only way to get the Zs from the Wall Connector was with it powered up with the front cover removed. It's own internal protection prevented any Zs testing from the charge socket which is annoying as that's the kind of thing we use the (expensive) ChargeCheck unit for, and that damn thing doesn't see much action to justify its existence!
This job was more awkward than expected, and took a few additional hours thanks to issues such as the main tails not being where we expected them.
Regarding (ongoing) argument over RCD type, Tesla's UK page says the following: "The Tesla Wall Connector does not measure DC current leaking, so an RCD Type B or a specific Type A-EV needs to be installed." I have to say, I missed the "EV" bit, so this may be the wrong RCD for the job. If undertaking the same, source a B or an A-EV to comply.
www.tesla.com/en_GB/support/h...
Related videos:
My surge protection video where I got the tail length wrong: • Exciting new SPD insta...
My follow-up video on surge protection: • Surge protection - a c...
Previous video shot on this site: • On the job with THE Sa...
John Ward's video on EV charging earthing: • BS7671 Section 722 Ele...
John Ward's farmyard artistry: • Earth Electrodes Part 1
Artisan Electric's advice on becoming OLEV accredited for EV chargepoint installations: • How To Become an "OLEV...
e5 Group's video on DC affect on Type-AC RCD's: • Effect of DC on AC RCD...
If Hollywood is watching, I am available for providing top special effects in future blockbusters. 50% cash up-front. Cheers!

[@tc_electrician5329]

“Money on my mind” 😂😂😂👏🏻 made me laugh 😂

[@stuartarnold9444]

After spending nearly £10 for a shitty pizza he needs every penny he can get.

[@muzikman2008]

@@stuartarnold9444 I think he was smart enough to get Nick Bundy to pay for it 😂🍕

[@dsesuk]

@@muzikman2008 To be fair, I bought the Wetherspoon's coffee. :D

[@Tomoose1985]

I can't stop chucking just thinking about "money on my mind". Why is it even funny? Lolz

[@generaldisarray]

@@dsesukTo be Fairrrrr... 🤣🤣🤣🤣 Pitter Patter!!! kzbin.info/www/bejne/oKeam5aZnrB1ldU

[@michaelcostello6991]

Keep providing as much details as possible about your installations including basic stuff that us learners need to understand. Big Thanks

[@Danny-do2ov]

Great content as always, Top Guys! I've been a spark now for 14 years and truly still learn something new every day, very informative video. Keep up the great work.

[@dsesuk]

Thanks Danny. I can't guarantee I've done this correctly though, which is why I've opened it for discussion on here. Chargepoints are a tricky beast, and the comments so far show different people have different understanding of how to interpret things!

[@stuartarnold9444]

I love how you explain your thinking about the install (even if it's wrong) before doing it, rather than just showing what you've done. I do miss Nige's crack display though. It's the only thing that makes me feel a bit better about my pot belly. 😉

[@dannymort7262]

Brilliant footage. The perfect blend of technical content, humour and real world on site content. Keep up the good work

[@dsesuk]

Thanks Danny.

[@reececrook9390]

By far my favourite KZbin spark, keep up the hard work with the videos David!

[@dsesuk]

Very kind, thank you Reece

[@jj-hn2ll]

David is the Spielburg of the Electrical Sparkys

[@richardwash6678]

Nice one David and Nigel. Really nice to see how to overcome situations in the real world! 👍

[@dsesuk]

I can assure you, our world is entirely make-believe!

[@KarlMcClelland]

"fairly safe"... job's a goodun. I actually stood back from the PC in case he hit something. Great video as always. Your computer wizardry is amazing. Love it. Keep up the great work.

[@dsesuk]

Thanks Karl. I suspect my video editing skillz have overtaken my electrical knowledge, so maybe it's time to hang up the McHat and go make millions on ASMR videos??!

[@KarlMcClelland]

@@dsesuk The FX stuff is off-the-wall (I think we said that back in the 80's). You'll need to do some sort of tutorial on how you manage this geniusness. Maybe Guinness

[@dsesuk]

@@KarlMcClelland Y'know, I haven't touched a drop of Guinness since I was in Ireland in July. I think I drank a lifetime's worth in that one week, now I can't face it any more!

[@KarlMcClelland]

@@dsesuk Well I didn't know that but.. I know it now.

[@ghspaelectricalservices9296]

Nice video, nice to see the old bugger back too

[@kurtharrison8658]

Cracking video as always Mr Savery!

[@dsesuk]

Cheers Kurt. Hope I didn't make any mistakes on this one. I'm sure the internet will let me know.

[@coopernikolas]

Your sense of humour is ace Dave! 😂😂😂

[@dan_]

1:13 I can see a future in ASMR for Nige. Those hand movements really get the tingles flowing.

[@dsesuk]

I was telling him about those videos; my niece watches them and they get millions of views. I'm some kind of sucker banging out this crap!

[@richardwallace3477]

A very comprehensive video, well done! I’m not an expert, by the way, but learnt quite a bit when I was asked to install a Tesla charger back in March; it too was a PME system and I put in two earth rods not far from the charger. I also worried about maximum demand but managed to justify the additional demand from the charger - no sign of any deterioration when visiting installation a couple of weeks after it was put into use. Cheers.

[@dsesuk]

Richard, you are a star. To hear that someone else out there also TT'd a Tesla charger on a PME system is a huge relief! At least if I get slated on here for having done it wrong, I'll know I wasn't alone in interpreting the earthing requirements in this way!

[@xxDADDYDAYCARExx]

@ David Savery Electrical Services ....... Hear hear. Fully agree with both you guys👍 but tell me....... did you end up putting in a second earth rod as you didn’t cover it in the video. Fully agree with moving the ‘ironic’ fire tails and the spd installation too. ALWAYS get a laugh from your great videos ❤️❤️❤️❤️

[@mathman0101]

Here in the US pretty much TT all the way. Usually put two ground rods in without doing a fall of potential method testing (Wenner method) which I would always do because earth/ground resistance varies for different soils types, and temperatures also how wet or dry the soil is. Testing the way you did does not provide great accuracy. JW did this for his shed recently which was the way to do it. Though excellent job - overkill on ground and earth resistance is never an issue. US NEC code would suggest a reading of 5ohms yes you bet ya - 200 ohms that’s very high on an isolated earth system maybe the tolerances are higher in the U.K. due to RCD protection on the circuit. In my house it’s as low as 0.2 ohms with 3 ground rods. In Middle East they pound the rods below the water table (dry soil has high resistivity).

[@jzburns1990]

I hope you remembered the second earth rod. Great vid very educational

[@jj-hn2ll]

David you are absolutely wasted doing electrical work , far suited to 2 ronnies sketch . I myself have been off work due a leg injury and not sure whether i shall return . I have to retire in 1-2 years anyway but it still upsets me as apart from the people (lol) i did enjoy the job. . Your video's have given me so much entertainment it takes a little edge off my present disability sat at home( i am a qualified sparks allegedly lol ) . Keep up the good work your video's are not only funny but extremely informative.You are always learning something even after 40 years + in the business.

[@dsesuk]

Very kind of you to say so, and all the best with the recovery, I hope you're back up and running sooner rather than later!

[@leighdamian]

I think you two are far better than TV.Keep up the great work.

[@dsesuk]

Cheers Leigh, although watching paint dry is better than anything on ITV!

[@Mike_5]

Top class video as usual and even using a Cable and Pipe locator like us DNO's do for HSE and very highly recommended to prevent unfortunate frizzy hair styles and a slight burning smell in the van after attempting to insert a large conductive earth rod into an underground service that is not very happy with the unannounced introduction!

[@dsesuk]

Haha! We bought that damn Utilifinder thing abut three years ago and it's seen very little action!

[@ttff6810]

Good video as always David, Had me laughing from the start, but some good technical advice in there, good install,

[@dsesuk]

Cheers. I just hope there's no technical headaches I've got wrong in this one.

[@gamingwiththeboys6639]

Keep doing what your doing....Good explanations and good humour 🤣😂

[@dsesuk]

Thanks John!

[@dazzafat]

Brilliant video david as always keep it up

[@dsesuk]

Thanks for that kind comment

[@JPElectric]

Great video You've done very well getting those tails into the Henleys inside a plasterboard box. Can't work out how you've managed it. Hats off to you...

[@dsesuk]

A 47mm box with the top and bottom cut out for cable entry. 25mm flexi-tails and the Henley's were F4P 5-way single pole connector blocks (x2) www.cef.co.uk/catalogue/products/175537-100a-single-pole-connector-block

[@JPElectric]

Thanks Flexi tails!!!!, I'm never used them, but just looked them up. How could I have missed these, Ive always used non flexi tails apparently...

[@dsesuk]

Mate, I'm new to them myself and this was the first job I used them on. An absolute dream: I won't be going back to the pipe-bending antics of rigid tails like some kind of sodding plumber! My local CEF sells them cut by the metre whereas the likes of Denmans sell the three-metre bagged variety that comes with a length of 16mm earth you probably don't want!

[@JPElectric]

Brilliant. thanks.

[@westinthewest]

This video is very useful. I'm booked to install the same Tesla charger in Birmingham Friday. I looked at the manufacturer's instructions and decided that it made no sense to worry about earthing. It seemed even less onerous than installing a Class I (earthed) PIR floodlight on an external wall. It now seems I need to give it a bit more thought. Firstly I'll check if it's a TN-S supply. You've also alerted me to the RCD-type issue. I might have to reschedule the job so I can do some more research beforehand.

[@dsesuk]

Sorry to have scuppered things for you! I may be all upside-down on this, especially with the rod requirement for this particular kit, but I couldn't find sure information for installations in the UK specifically. Do let me know if you come across any interesting information on the requirements though!

[@train4905]

Most excellent job sir.well done.keep up the brill work and great vids.

[@dsesuk]

Cheers Stephen

[@rowles13]

Excellent video again!!!! filled with interesting facts with a touch of humour. You could end up in the Cannes film festival for best factual animated documentary.,be carefull👌👍

[@dsesuk]

Maybe I should get arty? My next video will be in black and white!

[@keithjohnstone9889]

Excellent video. Really enjoyed it. 👍

[@dsesuk]

Thanks Keith

[@matthaddock6490]

Great material David please keep the videos rolling,

[@dsesuk]

I dunno Matt, I think the wife suspects me of having an affair as I'm hidden away editing for so long!

[@matthaddock6490]

David Savery Electrical Services Haha I think she would be happy if she knew the truth cheers 👍

[@richardlewis5316]

I watched your installation of the SPD and understood exactly how you felt about no master switch installed to isolate the Henley boxes. In one renovation project I had to install a secondary CU to supply a shower so the only way to connect it safely was as you did - draw the supplier 100A fuse which did involve cutting the sealing wire. On completion should I have called the supplier to reseal and face questions about removing the seal, leave the seal completely off or as I did was to open the seal and reinsert the wire and reseal.

[@Stefan-ps6tl]

That opening was gold

[@rattlehead85]

Great video as per usual guys!!

[@dsesuk]

Ta very much!

[@bikerchrisukk]

Well may be I'm just happier than usual this morning (can't think why), but I bloody enjoyed that. Well done fellow me lads 👍👌

[@dsesuk]

Thanks as always!

[@anthonyridgley1819]

You two together are mental lol 😂😂made me laugh an another great video bud

[@dsesuk]

Thanks Anthony.

[@jix177]

Great video, very informative. Thanks.

[@dsesuk]

Ta.

[@PlymouthSparky]

Fantastic, funny, entertains and educational. 🍻

[@dsesuk]

High praise coming from one such as yourself! Cheers!

[@dsbelectricaldavidbetterid8448]

the pme issue is the open pen problem , you could install a rod to the met of the pme and use the earth but you would after running the calc need the rod ev ra to hit 2.29 ohms max most likely need a earth mat and grid to get it that low if you had a commercial building with pme, the embedded steel may satisfy the ohm ev ra requirement , its to limit it to 70v rms as per 722 great vid as always

[@johnschlesinger2009]

Great job, and fun video as well.

[@dsesuk]

Thanks John.

[@shilks8773]

Great to see some Car charger installations with all their inherant challanges. Esp the need now for seperate TT earthing rods.

[@dsesuk]

Thanks. Can't guarantee this is completely correct, but show me any car charger installation that everyone is happy with!

[@cherrybacon9790]

Concerning the earth rods- its actually a hot topic in the overlaying EN standards already. The issue is, that some manufacturers requested to backfeed power into the grid, thus making their vehicles network buffer batteries. Hence, it becomes a power generating device which must (by EN) be earthed as a unit on its own. The fact that the vehicles can be plugged in-and-out makes it equally a mobile consumer- a combination rather uncommon with generators.

[@delspark]

Great vid Dave and a bit of singing 🎤 can’t go wrong 👍

[@dsesuk]

Cheers Derek, I'm glad someone appreciated the crooning.

[@1962lp2h]

I watched this all the way through waiting for the 'floating bust' DOH!!

[@alunroberts1439]

I did my 236 a billion years ago I still read up on new reg's all fun

[@Khanjan-si8me]

We are the best sir ..well done .

[@theavchap]

Real world problems being overcome. Great video.

[@dsesuk]

Probably in a way that was more complicated than it needed to be!

[@theavchap]

David Savery Electrical Services Can’t remember a job that didn’t end up being exactly that!

[@JBE]

Is there any tool you don't own? Wonderful upload as usual Mr Savery. Really appreciate the work you put into these kinds of videos and I'm sure everyone else does too? Green screen, CGI, tech info, physical work, great presentation, and great tool product reviews. Only thing missing was Nigel flossing!!

[@dsesuk]

Cheers James. I did ask Nigel to floss on camera, but the next thing I knew he'd taken off all his clothes and was passing a rolled-up towel front to back across his barse. I couldn't include it in the video. In fact, I had to burn the SD card it was recorded on.

[@JBE]

@@dsesuk I think that's what I was doing in Birmingham?

[@keithquestedelectrical9785]

Hi david Really good video. Love the problem solving it's what we do best . And Monty python lives

[@dsesuk]

Thanks Keith

[@GraingerElectrical]

Good video, interesting. Is it regulation to fit a fused spur instead of a socket for kitchen appliances like a washer or dishwasher?

[@gino2465]

Really good job and yes any other installer would have done a quick cheap get it up and running job possibly even used the dno space in the cut out box which we know is a no no thank you efix. Just hope that other qualified electricians use this video as a training aid as it was 100%.👍

[@davidjohnston779]

This deserved a like for the editing alone 🤣

[@sbusweb]

+David Savery Electrical Services Hangon a moment -- is that a 32a MCB (not type-A-RCBO) in the lewden board?. If so, I foresee a problem -- the TT earthed armoured cable is vulnerable to Line-Earth faults (if damaged or internal manufacturing fault) just causing the TT-earth to become 'live' sizzling away in the ground. I'm fairly sure in this circumstance, you need an RCD at the head-end due to TT-earth used somewhere along the route. I think that, is why, is normal to use the PME earth on the armouring, and then separate in plastic box under the charging-point etc, so the RCD requirement goes away, but you do then have considerations about increased risk of touching the armour, but I think that is much less of an issue than potentially having a cable-fault make the whole SWA-armour and earth-rod become live with nothing to trip it out...

[@sdgelectronics]

The big JW would not be pleased of your choice of rod enclosure. Great vid

[@dsesuk]

Haha! They are a bit flimsy I guess. Thanks for watching Steve!

[@andysmith6633]

David, firstly great content 👍, I notice at home you have a PodPoint Solo (I think). I believe these have built in RDCDC (apologies if that's wrong!) Which effectively offers protection against the loss of a neutral further back from your installation. Meaning an earth rod (TT earthing system) is not actually a requirement for that specific piece of kit. This may be a new thing like a Generation or Mark 2 unit. This is definitely going to make installers lives easier because watching my colleagues and indeed Nige whacking an earth rod in outside someone's house gives me nightmares. Interested on your thoughts on this.

[@dsesuk]

Thanks Andy. I don't actually know too much about my Podpoint as it was installed by a firm under the OLEV scheme when I bought my Nissan Leaf. Well, I say someone else installed it, I ran in the circuit and earth rod so that the cable would be hidden as I didn't want some messy SWA bolted to the front of my house. The chap who turned up just needed to bolt it to the wall and switch it on! Rods are a nightmare though, you never know where the gas, electric or drainage will be running.

[@g.t.36]

Great video once again

[@dsesuk]

Thanks once again!

[@alexwood020589]

I don't know this for certain, but I suspect the reason for the earth rod is due to the battery in the car. It is conceivable that you could end up with a fault where the battery of the car is directly connected between live (or neutral) and earth. That's 400VDC (800VDC on some newer EVs) with thousands of amps of current capacity behind it. The earth rod is probably to prevent the earth bond at the substation being melted by the fault current coming from the battery.

[@muzikman2008]

Top video again Dave! A great insight into car charging installs. I think I'll give it a miss, too much hassle at my time of life 😂 even waiting at that junction got my anxiety levels way too high. I bet that charger tester, and utilility tester cost an arm & a kidney too.

[@dsesuk]

Ta. And yes, they weren't specifically bought for this job, in fact I've had the Utilifinder for about three years, but they ain't cheap and they don't see a lot of action for their price tags!

[@muzikman2008]

@@dsesuk like my whia torque driver set 😂 the crap electricians have to buy...

[@jonathanbrown9245]

Great video, watching David cough, i had to go wash my hands and eyes lol Did the second earthrod do the trick?

[@alilal7874]

Great start 👍👍👍

[@shawnbryce9266]

Brilliant stuff!

[@dsesuk]

Cheers Shawn.

[@evguysltdianlawrie2274]

Excellent vid 👍.I’m glad it’s not just me that comes across nightmares 😂.

[@dsesuk]

When the client mentioned he wanted this installed, I did think life would just be easier without it on my plate!

[@evguysltdianlawrie2274]

David Savery Electrical Services - I’ve been asked by two Tesla owners to install EV points, but not the Tesla units. I’m Rolec authorised, although the Jury is out on their reliability? Just did the Schneider course, but my god they’re expensive! I sometimes wonder if it’s worth the hassle 😂. I see more value in the maintenance in the years to come though, so might be worth it one day? I’m too old to keep knocking lumps out of houses 😂😂😂. Keep the excellent vids coming. Love the Don JT too, but sometimes his voice sends me to sleep, so come 23:30 I put him on 🤣🤣🤣

[@evguysltdianlawrie2274]

JW rather......Too. Ugh too much whisky!

[@dsesuk]

Haha!

[@daytona964]

Dave, Thanks for vid; very informative and nice to sit back and see someone else get their hands dirty!! Where did you buy that typpe A rcd? Cant seem to find one???

[@dsesuk]

Thanks, the one used was from Denmans, but the actual Lewden one was from CEF. I'm not convinced they're right for this task though; a Type-B or Type-A EV is what is actually specified as it turns out.

[@daverann]

A type B RCD should of been used or type a EV

[@jonathanbrown9245]

Great video, watching David cough, i had to go wash my hands and eyes lol Did the second earth rod do the trick?

[@PJB71]

Hi David, video excellent & informative as usual. I do have one question, which has confused me, Could you please explain, I understand how it will work. You have given the Consumer unit to supply the charging point a PME earth. I can clearly see that the PME earthing stays in that consumer unit, you then TT the charging point. What is confusing me is why the you have taken the PME earthing to the consumer unit at all. Could the rod not have been connected to a cable sheath & the spare core & been terminated at the consumer unit. I under stand that the previous installers wanted to run a 6mm swa, I presume this was for the demand & a core for the rod. I have often carried the PME earth to a building, ended it in an insulated enclosure & created a TT install at the new consumer unit installed. I’ve just never seen anything like this, I have no doubt it will work. Also your last video on the surge protection was brilliant, this has taught me a lot.👍🏼

[@dsesuk]

Hi Patrick. I wanted to run the PME through the Lewden CU so that the SPD could do its job. Aside from that though, I was trying to avoid touch contact between the PME and the rod which remain as separate earthing systems here. Having the metal Lewden board TT'd next to the PME earthing of DB1 and DB2 wouldn't be a good idea in my opinion. If this were power to an outbuilding, I would have done it in the way you said, but with car chargers you have this bit in the Code of Practice which says the PME can't be in touching distance of where the car is charging. If I had one SWA, then I could have kept it as PME down the sheath and taken it directly into the charger via a stuffing gland where the PME can be capped off and kept away from the TT, but here I had two SWA's to terminate externally to the chargepoint, so had I used PME on the sheaths, the SWA glands would have been potentially accessible right from underneath the chargepoint position (i.e. there would have been a simultaneous touch point with just centimetres between the rod and the Wiska box). If that makes sense?! It was an unusual job where I was trying to comply with the regs, the CoP and the manufacturers' (sparse) instructions as well as the homeowner's expectations which made it challenging and meant that whichever way I did it could be viewed as questionable. I'm not sure this is completely right, I am sure others would have different ideas on how they would have approached it, but it is useful to open it for discussion. I hope that explains it, but I'm still on my morning coffee here and haven't fully woken up yet!

[@PJB71]

Cheers David 👍🏼 That make sense, I cannot see why it wouldn’t work. All car charging points should have some sort of isolating transformer, so they can be supplied from a PME supply.

[@dsesuk]

@@PJB71 It sounds like some recent innovations and the upcoming Amendment 1 may make things clearer and easier, so we'll all watch this space!

[@ediijay9897]

I thought that was a great video. I've been to a home before and seen a car charger connected using the earthing system of the house PME. Installed by a specialist company too. Makes you wonder.

[@searleelectrical]

Great video. I found I can’t always get my rolec test adapter to work with the Tesla Wall Charger. Have you ever had any issues?

[@Aviationjay76]

Nice job 👍

[@Chris-uu6dg]

Hi David. thanks for your excellent explanation of your setup and particularly the earthing rod connections to avoid the PME, I am still a learner and was trying to get my head round this kind of EV charging installation and your video has helped a lot. Would you do a similar setup with an earthing rod if you were installing electricity to an outside metal shed in a garden that houses for example water pump and UV light filter etc? The metal shed is obviously an extraneous conductive part so would be bonded to earth to the earth rod I presume but not connected to the PME from the main house? Thanks for your help and excellent videos. Chris

[@dsesuk]

Thanks Chris. We usually TT outbuildings, but a metal one especially would require TT earthing unless there are circumstances which mean it's not ideal for some reason.

[@Chris-uu6dg]

@@dsesuk Great many thanks for your reply David much appreciated.

[@michaelboyes4948]

Great video as per with cracking special effects,electrical talk what more can you ask from KZbin

[@dsesuk]

Thanks for appreciating the super SFX!

[@ef7480]

Lol , the foundation of the walls protrude at least 150mm from the actual wall. They aren't flush with the wall but good effort Nigel...😄

[@gavinwarren1413]

You're getting quite good at this electrical work.

[@dsesuk]

I keep practising, but I doubt I'll ever master it.

[@user-rn5ip9ec6j]

european panel - inside home.

[@morkthebuilder9943]

Great video as normal.

[@braatensafe]

1:50 Well, that RCD is not going to last long then, Type B is specificly for DC disturbances and faults from this installation the electric cars. Here in Norway it is required to use Type B on electric car charging installations. Installing home charging stations is very common here as just in September 6000 new electric cars were registered.

[@dsesuk]

Not uncommon for Type-A on EV's here. But then, we're still sticking in Type-AC's like they're a good thing when the rest of the world appears to have moved on!

[@sdgelectronics]

@@dsesuk In theory, there should be no DC bias to interfere with the operation of the RCD anyway unless something is seriously wrong. The charger built into the car has suitable active power factor correction so that the current being drawn is sinusoidal also.

[@jamesdyas542]

Completely agree tt off pme is absolute bollocks. Excellent video thanks.

[@dsesuk]

Thanks James!

[@paulf2529]

Excellent installation, I'm not too keen on the look of the actual Tesla charge unit though.

[@dsesuk]

Awful isn't it? Nowhere to wrap the cable! My PodPoint is sooo much nicer!

[@hikariyouk]

"they're not very cheap" - is that really a concern for someone with a Tesla?

[@johnburns4017]

Some EVs are now ICE car prices. Many are on the used car market as well, so cheaper again to buy.

[@Danny94James]

is it really a concern for anyone who owns a car?

[@johnburns4017]

@@Danny94James I think charging would be when owning an EV.

[@ScrotumPole]

LOVE the intro

[@dsesuk]

My 'levitation' special effect. Pretty convincing, no?

[@ScrotumPole]

@@dsesuk Idea for intro, you in shower, we see your arse through the glass, the mobile rings, when you get out to answer youre wearing a fig leaf and nipple covers. you open the closet and theres a superman suit hanging there, you choose the batman suit.....

[@dsesuk]

@@ScrotumPole I ran this past the wife who vetoed it in pretty short order. Pah!

[@jamescleary5198]

McExcellent episode Mchat man and Nige

[@dsesuk]

McCheers!

[@FrontSideBus]

Might be a silly question but could you not have used all 3 conductors in one cable for the live and all 3 conductors in the other cable for neutral with the armour on both for the earth? That would give a combined area of 7.5?

[@dsesuk]

Not a silly question, and yes I could have used all three conductors. In this installation though, I thought limiting the current would be best considering the demand, and I like to have a dedicated CPC in an SWA, even if the armour is earthed and it doesn't connect to the kit on the end of it!

[@berniegackowski9359]

If customer is using the on board charger with a 3 phase supply connected does TT earthing have to be installed.

[@SirHackaL0t.]

SFX are great. :)

[@zjzozn]

Hi, I’m from Hollywood FX, I’ve seen your work and would like to employ you for the future film, Fast and Furious 69 and perhaps Terminator 8-ang! Oh, and can you say, I’ll be back? 😂

[@dsesuk]

Certainly sir, if you'd like to pop me over a massive brown envelope full of cash, I'll get right on it!

[@zjzozn]

Dear Sir, I sent you an envelope stuffed full of brown stuff as you requested and have not heard back! It took me days to fill the envelope. I’m now producing the Mission Impossible film in Birmingham. Do you have any body double experience?

[@dtec30]

love the squeaky wheel ..

[@dsesuk]

I'm hoping WD40 will see this vid and send me a free can.

[@dtec30]

@@dsesuk currently up to the gold digging section

[@Mark-M72]

great video

[@dsesuk]

Cheers Mark.

[@stevebeal73]

Good video. As charging times for EVs is an important issue for the end user, was the customer aware that setting the charger rate to 25A would mean that the EV takes 28 % longer to charge?

[@dsesuk]

Yes, he knew up-front about the current restriction, but it was his insistence that the existing SWA be used to avoid decorative damage or degradation of visual impact to the property. This was a job where we were engaged in minor work relating to some moves & changes upstairs in the house, and while there the homeowner asked me to quote for a possible chargepoint installation because he had a Tesla on order. I didn't get around to it, but then a few days later it suddenly moved to "my Tesla is being delivered this week" and I had to quickly plan and cost the job. The throttling of the current was built into the estimate though, and the scope of works detailed why the installation was designed in this way. The only viable Plan-B would be a new 6mm SWA snaking around the front of the house to the opposite side, and I don't think that was ever a saleable option for his better half!

[@busman2000]

I note the diameter of that Earthing stake was way smaller than here in NZ. ours are about the diameter of the proverbial middle finger of a healthy well nourished male.

[@dsesuk]

Haha! Different sizes are available. Perhaps I should have chosen something more substantial for this job!

[@niallgilmore2411]

Fresh from a niceic tech talk today we were shown a calculation for working out the value required for the rod supplying an earth to the charging unit. Basically it always works out to around 1 ohm. Which is close to impossible.

[@dsesuk]

That's if you want to connect the charger earth rod to the MET while maintaining the PME earthing. For a 32A charger, Ra would have to be below 2.5 Ohm which is.... unrealistic. This is why most chargepoint installers keep the kit TT'd and don't connect back to the MET.

[@cunning-stunt]

Would the extra earth electrode ensure any potential touch voltage is kept to a minimum? The installation earth stake could be some distance from the charger point and as you are using a class one appliance (the charger) in an earthed situation then you are at risk from transient voltages especially with a device that uses high frequency switching?

[@dsesuk]

JW did a good vid on earth electrodes and separation which is linked in the description. Distance is important, but I couldn't tell you about high frequency transient voltages in this application.

[@cunning-stunt]

@@dsesuk My understanding of the need for a type B RCD is because of the high frequency switching. We are not allowed to use Type A here for EV charging.

[@supersparks9466]

I’d of liked to have seen Nigel driving that car waving out the window, more work on the special effects needed

[@dsesuk]

Damn, I missed a trick there.

[@tasercs]

Hillarious opening scene... I feel sorry for the Australian, relaxing in his garden with a beer when he unexpectedly got an earth rod up his escape chute. The doctor only believed his story when they found bits of that house's foundations up there :)

[@dsesuk]

Went straight through the can of Fosters at the far end!

[@gavinjohn-hyde2760]

If you install a lot of chargers where its hard to get a rod in. The you can install them on pme system using a monitoring device, a company called matt:e are making them. Around £100+vat told me available in next few weeks when i enquired last week. Will save trying to get a rod in when the ground is full of boulders.

[@dsesuk]

Interesting. The technology is moving on, and Amendment 1 is out next year to address that. Rods are a nonsense though, we need equipment that can do away with the requirement.

[@gavinjohn-hyde2760]

@@garbon73 no. There is also ones for single phase available. When i called them last week they were being made and should be ready for shipping in next fortnight or so.

[@calvinhale2723]

Great vid again David, your tackling jobs many sparks would swerve so hats off to you, you must be obsessed with electrics or drunk but you do love to dive into these installs. I mean someone's got to do them right ? Would love to know your pricing on this, for me this is technically a high value job, I just hope your making very good money as you should be whilst giving us all a laugh :)

[@calvinhale2723]

Oh and at 4.44 Nigel is possibly asleep with his eyes open, I had a dog who did that once... creepy.

[@dsesuk]

Cheers Calvin. I underestimated this job quite badly; it took a lot longer than I expected. It was sprung on us fairly last-minute; the homeowner had mentioned he was getting a Tesla while we were there for unrelated minor works, but I got the impression it was some weeks away, and then the damn thing got delivered a few days later. Still, it was an interesting learning curve, if not actually much fun when the pressure was on at the time!

[@ElJohnerino]

15:10 The mating call of the English Barking Spider again, damn they're around late this year.

[@dsesuk]

They nest in Nigel's undercrackers where it's warm and moist.

[@BenCos2018]

24:00 that was the fan beside you its the same where i live (air to water heat pump problay a daikan one...)

[@dsesuk]

Forgot to isolate it even though it was right next to me!

[@BenCos2018]

@@dsesuk it still makes that noise even if you turn it off a the switch though. great video btw

[@dsesuk]

Yeah, it just rather caught me by surprise!

[@shanginadildo]

I worked for a company that solely installed EV charging points. The director of the company used to connect into the incoming of the main switch in the CU with 6mm hi-tuff, to then feed the mini unit containing our rcd and mcb (we never installed an SPD). I questioned him on it and he swore blind its legal....

[@simonabbott7323]

I was always told that type testing requirements meant that the contents of the enclosure should be of the same brand as the enclosure itself. Has thinking changed?

[@samhughes589]

I was thinking the Same here matey.

[@soyeonaddict8693]

Surely if you use the 3rd core to increase the CSA of the SWAs to 7.5mm, you will run foul of everyone's favourite regulation, reg.521.5.1, "ferromagnetic enclosures : electromagnetic effects". If you double up the 3rd core with L in one cable and N in the other, you'll get 2/3 of the L current in one cable and 2/3 of the N current in the other. But it might be worth doubling up the 3rd core with either L or N in both cables. You get a circuit with, say, L of 5mm and N of 10mm. The cable runs cooler, and it helps with volt drop.

[@Kernozenko]

So if the surge protection CPC is too long it will not carry the surge correctly and the surge will go back through the Main earth?

[@_Ali.]

Don’t have an electric car, let alone a Tesla, not a sparky, and yet at 2am here I am watching this...

[@dsesuk]

Thanks for tuning in Ali. I trust it cured the insomnia?

[@_Ali.]

@@dsesuk wouldn’t that imply you bored me to sleep? 😂 Was oddly fascinating tbh. Made me think “that looks do-able” 😂

[@xxwookey]

That first rod attempt probably hit the concrete footing about 700mm down. Bit too close to the house. Which is why the next go 150mm further out worked fine. I'd expect our Nige to already know that going that close is likely to fail.

[@2lefThumbs]

I'm no electrician, but I do have a Tesla, and had a 3 phase charge point installed at work. Since the Tesla charger (on a uk domestic supply) just supplies 32 A at 240V, and costs £500+, and obviously is complicated, wouldn't it be worth you offering a 32A caravan- style hook up for domestic charging? Teslas come with a 5m charging cable and a 0.5 m 13A plug adapter, the 16A and 32 A plug adapters both cost around £50 even if fitting an outdoor 32A socket and isolater would be equally complicated, you'd still save the customer £450 , no? I guess load balancing might be an issue🤷‍♂️

[@apartmentswales]

I would have loved to have taken a closer look at developing the existing DB1 to accommodate the SPD and MCB for the Charger, Sorry but IMO some clever amalgamation of circuits in DB1 could have freed up the spare ways needed and made this job a lot, lot easier and yes I know about hindsight and I too am as guilty as the next guy in doing some jobs that I would never repeat in a million years the next time around. As to placing the SWA Cable in the Void space, well, not something I would rush out to do, anything with a Mechanical Termination Device within a void space has to be a massive No No for me and there was those Henley Blocks sunk above the SPD Unit, ok, it is inventive use of space, but .............. Would have been nice to see how you finished the Earth Rod System and how you terminated the Rods and what the end reading was. On closing David I have to say that I loved the vid and your personality that shines through like a bright light and yes I did vote this vid up after saying a few negs. Mr Spence Eng ApartmentsWales.com

[@ArmedWarhead]

Cook little trick with the Henley block

[@kenbone4535]

You killed the air source heat pump, was the big hiss when you shut done the main isolator.😊

[@dsesuk]

Haha! Yeah, I'd forgotten to clock it off so was a little surprised when it wound down!