Tesla Wall Connector UK install

[@michaelcostello6991]

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

[@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. 😉

[@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

[@dannymort7262]

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

[@dsesuk]

Thanks Danny.

[@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.

[@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).

[@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

[@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!

[@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!

[@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🤷‍♂️

[@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!

[@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!

[@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!

[@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!

[@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...

[@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.

[@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.

[@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.

[@jzburns1990]

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

[@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

[@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.

[@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!

[@coopernikolas]

Your sense of humour is ace Dave! 😂😂😂

[@anthonyridgley1819]

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

[@dsesuk]

Thanks Anthony.

[@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.

[@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.

[@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%.👍

[@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!

[@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.

[@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!

[@emmetg888]

Am I right is saying that because you kept the charging point at 25A and didn't exceed the maximum demand that a priority circuit wasn't needed in case where the house had electric shower??

[@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!

[@ghspaelectricalservices9296]

Nice video, nice to see the old bugger back too

[@gamingwiththeboys6639]

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

[@dsesuk]

Thanks John!

[@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?

[@usefulrandom1855]

How come the 3 pin moble charger is legal to use without the PEN protection etc or does the mobile charger have built in protection?

[@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?

[@Stefan-ps6tl]

That opening was gold

[@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!

[@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!

[@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.

[@jamesdyas542]

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

[@dsesuk]

Thanks James!

[@georgebarlow3724]

16:25 (ish). The homeowner wanted it at a lower height, but you read and followed the American manufacturers instructions and denied them their wish. As we aren't in America, and the UK 18th Edition Wiring Regulations, 722.55.101.5 (height of installation) clearly states 'the lowest part of any socket outlet shall be placed at around a height of 0.5m to 1.5m from the ground', surely that means it would've been ok to let the owner have the connector at the height they wanted as long as the bottom of the connector was a minimum of a half meter from the ground?

[@dsesuk]

Hi George. The half-wall he wanted it on really wasn't suited to the size of the thing, but I suspect that reg is to allow for accessibility to a socket for ease of insertion with a charging lead whereas this is a tethered charger anyway. I'm also not sure that the manual we had was specifically for the US market, but I may be wrong and I can't locate my copy at present to confirm.

[@georgebarlow3724]

@@dsesuk thanks for the response David. There is a Tesla charger at a hotel close to me that has mounted the connector on a post at a height of 22" (from the ground) to the bottom of the connector, so I was trying to make sense of how high (or low) it could be installed as hopefully sometime in the not too distant future I hope to get a Tesla wall connector installed myself. I appreciate your feedback

[@PlymouthSparky]

Fantastic, funny, entertains and educational. 🍻

[@dsesuk]

High praise coming from one such as yourself! Cheers!

[@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.

[@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!

[@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.

[@siacadp]

What was that noise when you turned off the supply at 23:58?

[@dsesuk]

It was the ground source heat pump shutting down. I'd forgotten to turn its isolator even though it was right next to me whirring away when I flicked the main switch!

[@AndyK.1]

Oh. I thought it was more special effects.

[@dsesuk]

@@AndyK.1 It just goes to show that my SFX were so well integrated, you didn't know what was real and what was 'special'!

[@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.

[@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?

[@alilal7874]

Great start 👍👍👍

[@Webbster77]

Do you not need pen fault detection if it’s TT’d?

[@lukeboy94yo]

Out of interest, how did you go about filling out the cert on this? Because the board it’s fed from is PME, but you’ve TT’d the charger end. Have you just filled the Zs value from the wiska box inside the house? Also from a technical side, the parallel conductors, ie your two 1.5mm SWA’s I’m almost certain these lengths of runs need to be exactly the same, because of causing imbalances. Perhaps look into calculations on that :)

[@dsesuk]

Hi Luke. The EIC had both TNCS and TT ticked. The Ze box showed the PME value as that supplied DB3 (the Lewden board) which was also subject to the same cert. The details of earth electrode showed the 183 Ohm reading we took for that. The R1+R2 for the circuit was the combined resistance reading for the cable (effectively an end to end test at 0.06 Ohm or something; I might be mis-remembering that!) After cutting the cable loop, we tested each half to ensure the length was the same and that each half checked out on IR. The Zs for the circuit was the 207 (or whatever) Ohm measured at the chargepoint. A comment field explained that circuit 1 off the Lewden board was TT.

[@dsesuk]

I should also add that a second rod hasn't been fitted yet. We haven't had time to schedule in a revisit!

[@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.

[@jix177]

Great video, very informative. Thanks.

[@dsesuk]

Ta.

[@alunroberts1439]

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

[@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...😄

[@berniegackowski9359]

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

[@armandine2]

You didn't use your primary clamp meter, the previously featured Klein, for the overnight job - couldn't part with it, or just battery level, I wonder - good product placement mind ( I have a 2056 on order - 2040s are like hen's teeth at the moment)

[@dsesuk]

I have several clamps meters, too many perhaps! Any of them could handle the max-monitoring for 24 hours with decent batteries, but the Kewtech is what I've always used for the task, it being one of the first clamps I bought!

[@millomweb]

I'm suspecting the first earth rod planting hit foundations ! Too close to the wall.

[@crfgunclub]

pmailkeey I don’t think he pissed on it correctly 🤫

[@millomweb]

@@crfgunclub That only applies AFTER correct insertion.

[@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.

[@ReverseSideArms]

How much you charging for an installation?

[@MysteriousDrJ]

Just educational purposes, what/where is the reference that states that building control and DNO is to be notified for the VCP installs? If I have been misinformed please correct me. Cheers in advance.

[@dsesuk]

I can't remember the reference, but here's the form I had to submit to WPD who run the show in my neck of the woods: www.westernpower.co.uk/connections-landing/connecting-a-new-ev-charging-point-or-a-heat-pump/install-an-ev-charging-point

[@MysteriousDrJ]

@@dsesuk Smashing! 👍

[@gino2465]

Buddy forgive me for asking in case I missed that important bit due to kids f****** about did you fit second rod and what did you get the reading down too.

[@_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” 😂

[@westinthewest]

What is the reasoning behind using the black core as a CPC? Isn't that what the armour is for?

[@dsesuk]

I just typed a response to your last query and when I submitted it I found you'd deleted it! You're right, we could have used the third core of the brown/black/grey cable to increase the overall CSA for some extra whumph. Ultimately, it was the demand that swung us into dialling it down a notch just to be on the safe side on paper.

[@westinthewest]

@@dsesuk Sorry I deleted it. I had second thoughts about how coherent I could be at this time of night. Here it is again: Does the 3-core cable use colours black brown grey? You'd have a total of six 2.5mm conductors available. If one of the SWA cores is green/yellow then yes, Regulation 514-04-02 says it can't be re-purposed. Also you might even find that Iz for two 2.5 cables is more than that for 6mm because of the greater surface area for the parallel conductors. You might be able to carry 60A even without using the third core. As you mentioned that you're setting In to 32A, none of this matters anyway.

[@dsesuk]

Quite alright old chap, and it was an excellent question!

[@AndyK.1]

westinthewest That’s thinking outside the box.

[@westinthewest]

@@AndyK.1 Regulation 433.4.1 can be very handy, and SWA is perfect for using cores in parallel. If you can terminate SWA in a way that allows you to crank it up to its 90 degree rating, it'll take a surprising amount of whumph.

[@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!

[@GraingerElectrical]

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

[@pault4793]

Hi David, just observation , this set up of yours will be non compliant as the SWA armouring must be connected to the cpc of the earthing system of where the protective device is . You then isolate the SWA at the charger end, Doing the linking out of the cpc of the armouring and the electrode i deem to be incorrect. See regulation 542.1.3.3

[@dsesuk]

Thanks Paul, I'm aware of this, but the issue here were the two SWA's to be jointed externally to the chargepoint. If it were one cable, I'd have taken it into the charger via a stuffing gland leaving the PME out of touch, but having two cables at the exterior Wiska box left the metal glands accessible. I could have used a larger enclosure and then fitted the Wiska box inside it I guess as a form of double insulation... Anyway, it was an unusual requirement I was trying to make the best of, and whichever way it was done could be argued as being right or wrong. I certainly don't claim here that it was the best way or even the right way, but the questions and discussion raised shows it's one open to too much interpretation!

[@pault4793]

@@dsesuk just my opinion as i got pulled on this years back doing exactly that, it was feeding a shed athe time, nevertheless do enjoy your videos can be informative / amusing , keep it up

[@dsesuk]

Interesting to hear of the telling off! I presume that was on a CPS assessment? You are right though, and I could have done it another way to keep on the right side of 542.1.3.3. It was a short notice job where I was trying to meet client expectations while also trying to keep the EV Code of Practice satisfied and whichever way I looked at it I was second-guessing whether it was right or not!

[@simongregory4264]

Consider a career in comedy ! Made me laugh

[@dsesuk]

Beats doing this damn day job!

[@JJ-kr6ky]

@@dsesuk what happened to never work a day in your life if you love what you do!

[@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.

[@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.

[@delspark]

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

[@dsesuk]

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

[@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.

[@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!

[@XO.Clinic]

Is the TESLA wall charger the best option available in the UK? Based on speed / functionality

[@dsesuk]

Speed is usually determined by the vehicle and electrical installation more than the charger as all manufacturers make models that (generally) sit on either a 16A or 32A circuit for single-phase domestics. Personally, I didn't think much to this thing. The way the plug hangs off it and the lack of cable stowage make it an unattractive thing to hang off the wall compared to other makes in my opinion.

[@DTELEC]

Brilliant video david as always keep it up

[@dsesuk]

Thanks for that kind comment

[@gavinwarren1413]

You're getting quite good at this electrical work.

[@dsesuk]

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

[@ОляП-д4х]

european panel - inside home.

[@keithjohnstone9889]

Excellent video. Really enjoyed it. 👍

[@dsesuk]

Thanks Keith

[@train4905]

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

[@dsesuk]

Cheers Stephen

[@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!

[@yinyeghakelvin1234]

Hi, my name is kelvin, a Nigerian, I love Tesla EVs and m planning in getting one especially model 3. I know my country have epileptic power supply and I planned to go off-grid with solar-inverter- batteries. I wanted to how this Tesla plugs with nema types can really fits into our sockets. I'll be glad if you could see me through the steps...

[@dsesuk]

I'm afraid I have no idea Kelvin! I have no experience of off-grid applications I'm afraid.

[@yinyeghakelvin1234]

@@dsesuk What volt is your country using and what phase did you use in connecting the Tesla wall charger

[@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!

[@Spark101.]

Is it ok to have mixed manufacturers in one board? Ie: different MCB’s?

[@dsesuk]

Not according to amendment 2, regulation 536.4.203. If you mix and match, then it's gets menufacturers off the hook should any undesirable effects occur afterwards and you become responsible for the assembly as a whole. It's a little different with items that don't sit on the busbar, or so I'm told, in that something like an SPD can be a third-party make, but I don't have that in writing!

[@Spark101.]

Ah ok……so your Lewden modified unit will now be your design, and your responsibility in regards to compatibility?

[@Spark101.]

Also: I was wondering……is it ok to stick a constant 7.2kw load onto a 32amp MCB? I personally can’t see a reason why not, but I’ve seen some sparks quote 80% as a maximum design current for MCB’s! Ie; no greater constant load on a 32 amp mcb than 25 amps

[@dsesuk]

@@Spark101. If I remember rightly, the Lewden board here only has Lewden components, albeit not necessarily all from the same range which is why there may be some physical differences. Electrically, it's mustard. It's not like an MK or Wylex have been mixed and matched.

[@prolecelectricalservices3813]

@@dsesuk Yes, I can see the MCB’s are all Lewden, but I think you’ll find you need to cut 3mm off the teeth of the comb bus bar if using EC type MCB’s to accommodate the GO6 range of MCB’s. I can see the gap under the EC MCB. It’s only by doing this that Lewden consider the 2 type’s compatible.

[@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!

[@johndineen3512]

Out off interest why are y running a 16mm from the earth rod dave

[@GeorgeStyles]

Coudlnt you have used the 2 spare earth wires in the armored cable to increase the cross sectional area and get the full current? or is that a big no-no?

[@GeorgeStyles]

actually - forget that - im guessing the wires themselves need earth :)

[@dsesuk]

You're right George, the black wire in the SWA could have been used to increase the overall CSA from 5mm to 7.5mm which would have been enough, then the SWA itself used as the earthing. I discounted that because I preferred to run an earthed core within the cable, and I wanted to limit the demand on the installation for the DNO paperwork!

[@GeorgeStyles]

@@dsesuk cool... Keep these videos coming ... Loving them :)

[@bostedtap8399]

If you only charge your electric vehicle whilst inside your home, does it still require a TT system?. Great job, a difficult one done well.

[@dsesuk]

Thanks. The Code of Practice states that "if the vehicle can only be charged within a building, for example, in a garage with a (non-extended) tethered lead, the PME earth may be used without additional earth electrodes".

[@bostedtap8399]

@@dsesuk Thanks for replying, have a great week.

[@cunning-stunt]

Can now get type Bs in NZ for about $160. I would have thought the UK would have them even cheaper by now?

[@dsesuk]

I think you'll find we're well behind the times in this part of the world C.S. I haven't seen one for less than £350-ish to date.

[@cunning-stunt]

@@dsesuk Price up one of these. www.gewiss.com/ww/en/products/experience-catalogue/catalogs/series/product/power/90-rcd-range-modular-circuit-breakers-for-residual-current-protection/GW95729 They have them in 2 and 4 pole. Schneider and GE are still $500 NZ. The Gewiss ones seem very reasonably priced unless my supplier misquoted me.

[@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 👍

[@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!

[@keithquestedelectrical9785]

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

[@dsesuk]

Thanks Keith

[@rogerbean393]

How come you don’t have the dedicated Metrel EV gadget. Is you meter not compatible with it ?

[@dsesuk]

I'm not sure that dongle was available when I did my EV course in 2016 Roger, so I went with the Rolec as that's what we used in the classroom. I suspect the Metrel model is compatible with any tester.

[@tresslerj1985]

10:51. The theory goes that the electric vehicle could become a giant capacitor waiting to discharge through the feet of the commuter when they grab the door handle in the morning. With its own earth connection there is a granteed discharge location for any capacitance built up. How likely? Unlikely but theoretically possible.

[@dsesuk]

Interesting....

[@muzikman2008]

Makes more sense... Static electricity discharge via an earth rod seems more plausible than any electrical safety reason, maybe its both? It's a new area for electricians. I always get sceptical about how these new cars are going to work out in the future, regarding battery tech, charging, demand on the grid, etc, I bet we will end up with universal cells you swap between cars, and petrol stations will be swapping your empty cells for charged cells they charge on site, instead of filling up with petrol. After all, you wouldn't put a petrol pump on the side of your house would you? 🤔 Crazy world...

[@havoctrousers]

That's very interesting. If that's true though, wouldn't the capacitance argument apply regardless of the earthing system used in the rest of the installation? As I understand it, it's only if the installation is PME/TN-CS that the charger needs TTing?

[@Klberts1234]

I believe it's to do with the rubber tyres in effect the car will become a large conductive part insulated from earth

[@havoctrousers]

@@Klberts1234 I posted the answer further down. It's in case the PEN conductor is broken in a PME system, it could potentially leave the vehicle itself and charging point as a shock hazard and an RCD would not protect you as there would be no current imbalance.

[@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!

[@cunning-stunt]

Was the belt for Nigel tax deductible?

[@dsesuk]

Yes. It was considered essential safety gear for keeping his breakfast from hanging out.

[@cunning-stunt]

@@dsesuk For eye protection I bet.

[@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...

[@dlewis129]

Different subject Grommets - flat side facing inside or out??

[@dsesuk]

Blind grommets? I'd have the domed side facing out.... but we might be at cross-purposes here...

[@dlewis129]

David Savery Electrical Services yep blind ones. Site discussion. I’m with you but I was on my own ( until now )

[@dsesuk]

Well you can bally well tell them they're all wrong!

[@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

[@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.