11kw Home Chargers

[uuf361]

Does anyone have any recommendations for an 11kw home charger ?

In my current house, have a Hypervolt 2 (7kw), but my new house has three phase so can increase the charging capacity.

Seems to be limited suppliers who do these.

[Benny Saltstein]

We have a Project EV 22kw charger at work which is fine. The app is a bit crap but that unit itself seems to be holding up well.

https://www.electrical2go.co.uk/project-ev-apex-22...

[barryrs]

Simpson & Partners offer a 22kw option and I have never had any issues with the App.

https://simpson-partners.com/?gad_source=1&gad...

[Cheib]

I have a Sigenergy three phase charger at home. So 11kw as you describe but up to 22kw if you have one of the rare cars that can utilise that. Been faultless and the software/app is very good. Good customer support too. We have Sigenergy battery/inverter for solar at home too, I’m told as a brand they are really dominating that market.

I have a hybrid which takes two hours to charge with the 11kw charging speed, sometimes comes in handy.

[quinny100]

Tesla Wall Connector will do 11kW 3 phase out of the box and they’re relatively inexpensive as chargers go.

They are not so popular in the UK because they don’t have inbuilt PEN fault detection which are required under the regs for PME earthing arrangements so they require either an earth rod or a separate unit to comply..

[uuf361]

I’d seen the Tesla but then also saw about needing an earth rod which us a bit odd nowadays.

Neither car will take 11 at the moment, but planning on replacing one of them with one that will take 22kw.

I’ll have a look at those options

[DorsetSparky]

An increasing amount of chargers actually accept three-phase. Ohme and Hypervolt don't, but the Easee and Zappi do, for a kick-off.

[ashenfie]

uuf361 said:

I d seen the Tesla but then also saw about needing an earth rod which us a bit odd nowadays.

Neither car will take 11 at the moment, but planning on replacing one of them with one that will take 22kw.

I ll have a look at those options

Tesla provide a global product that not well suited to the UK. For most people 7Kwh chargers meet their needs. 11Kwh chargers are targeted for places like Germany were 3 phase is far more common.

You will have to decide if it's worth the hassle of upgrading for something that currently you can't use.

[Goatwidcoat]

Benny Saltstein said:

We have a Project EV 22kw charger at work which is fine. The app is a bit crap but that unit itself seems to be holding up well.

https://www.electrical2go.co.uk/project-ev-apex-22...

We have these at our head office too and nobody has ever had any issues charging with them and they are used every day. For the people that can't home charge they are great as they only get charged 20p/kw. We have hundreds of solar panels, biomass and all sorts helping to power everything so they can subsidise it.

[uuf361]

ashenfie said:

Tesla provide a global product that not well suited to the UK. For most people 7Kwh chargers meet their needs. 11Kwh chargers are targeted for places like Germany were 3 phase is far more common.

You will have to decide if it's worth the hassle of upgrading for something that currently you can't use.

As it's part of a new build and I'm likely to continue with EV's, I think it might be worth the investment when installing as the bigger capacity chargers don't seem to cost any more.

[Familymad]

We have a few of these dotted around our holiday lets with the 11kw versions. They get batttered by guests but are proving to be simple and reliable and UK made.

https://www.electrical2go.co.uk/rolec-evo-22kw-3-p...

[Gone fishing]

I've the Tesla one and it works fine on all our EV's. I like the abilioty to set the charge window from the app too which can be useful if you're on a cheap oiernight tariff and stops accidental charging in the day.

The PEN thing is something some get stressed by, I think you can argue it two ways, yes it means an extra device but then if it fails, you're not replacing your whole charger. The RCBO isn't in the charger either. Either way, I don't have it as my circuit was installed 10 years ago before it was such a requirement and I've had work done on the same consumer unit for othejr purposes and they've not cared as the regs aren't retrospective.

[theboss]

I have 2 x 22kW Zappis which I've had no problems with.

Most 3-phase chargers seem to be 22kW so I doubt you'll find a 11kW specifically, and you'd be better off with a 22kW unit wired for 32A anyway as it would provide more flexibility e.g.

22kW capable cars in the future (I have one, they aren't that rare, my brother's Tesla used to charge at 18kW also)
7.2kW (32A) delivery if you're ever constrained to single phase charging for some reason (some hybrids for example)
the ability to fit a dual unit and deliver 2 x 11kW charges without rewiring

[frisbee]

If I plug my car which only has single phase charging into a 22kW 3 phase charger at work it charges at 7Kw. If another car is plugged into the neighbouring charger they drop to 11kW each and mine only charges at 3.5kW.

If I was getting a 3 phase charger I would get a 22kW one in case you get a single phase charging car in the future.

[theboss]

frisbee said:

If I plug my car which only has single phase charging into a 22kW 3 phase charger at work it charges at 7Kw. If another car is plugged into the neighbouring charger they drop to 11kW each and mine only charges at 3.5kW.

If I was getting a 3 phase charger I would get a 22kW one in case you get a single phase charging car in the future.

Indeed. If you install two of them as I have, you rotate their phase connections so single-phase charges don't share the same phase. But if the second car is charging 3-phase as you describe, the single-phase one is getting knocked back to 16A / ~3kW

If its an untethered charger then the cable can also be a limiting factor, both for single vs 3 phases and also current. I've seen people use 3-phase 16/20A cables wondering why they can't get 7.4kW for example.

[uuf361]

I've realised 22kw is the way to go and seems to be plenty of options.

I'd better get the house built first!

[Gone fishing]

If you’re looking at 2 chargers, the Tesla ones are clever as they talk to each other to share the capacity they have, so you may get each car getting say 11kw and then when the one is charged the other can get up to 22kw - although that does require the car to be able to take it. I’m sure others may do this too, but if it’s an important feature it’s worth checking.

[Cheib]

Gone fishing said:

If you re looking at 2 chargers, the Tesla ones are clever as they talk to each other to share the capacity they have, so you may get each car getting say 11kw and then when the one is charged the other can get up to 22kw - although that does require the car to be able to take it. I m sure others may do this too, but if it s an important feature it s worth checking.

Ton install 22kw you’d have to be on three phase wouldn’t you ? A single three phase supply would I think be able to deliver enough capacity for two 22kw chargers ?

[theboss]

DNO will allocate you EV import capacity the same way they set export limits.

In my case it’s 22kW; it doesn’t matter whether I have 1, 2 or 10 chargers - they are group limited at 22kW

[Gone fishing]

Doesn’t really matter what the limit is, if there is a limit, having chargers that dynamically share the capacity is a benefit. A 7kw limit would work the same, without it being dynamic what do you do? Set them up to be 3.6kw each? That’s always compromised even if one charger isn’t needed.