EV Charger Cabling

[JesusJason]

I'm planning to buy an EV next year but meanwhile I'm having work done on the house where the Hallway floor is due to be tiled. Before this work is done I'd like to run a suitable cable run underneath (from the consumer unit to driveway) to use for a professional to install either a Pod-Point or similar (to the front of the house), can anyone recommend a suitable cable. The run will be under a suspended wooden floor and through concrete in the hallway probably 10 mtrs in length.

[anonymous-user]

With the assumption that you only have a single phase supply, that realistically limits you to a maximum of 7kW charging (because the car's OBC itself will be limited to that). That requires around 30 amps at 240Vrms. However, to maximise the votlage available at the vehicle, and to minimise losses, i would recommend sizing the feed for 5% losses at 50A (ie 50A breaker in consumer unit and 50A cable out to the charger) which would typically be a 6mm^2 cable (you would just about get away with a 4mm cable, but for the sake of not much more money, i'd go 6mm)

[JesusJason]

Thanks for replying, you are correct just a standard home single-phase supply. I was looking at armoured 3 Core cable 10MM² but it sounds like overkill, thanks for the advice I'll go for 6mm.

[anonymous-user]

If you have a three phase supply, what kind of charger can you get?

[anonymous-user]

Roman Rhodes said:

If you have a three phase supply, what kind of charger can you get?

If your car has a 3phase AC charging socket (and not many do) then you can charge at 22kW AC (just over 7kW per phase), and if you're really feeling rich, and have a decent 3ph incomer, then you could install a 50kW DC fast charger (CCS) but the costs go up exponentially, and unless you run a taxi firm, having a DCfast charger at home is really rather pointless (not to mention potentially life shortening to your battery!)

[PBCD]

Roman Rhodes said:

If you have a three phase supply, what kind of charger can you get?

Using PodPoint as an example, they do a 22kW home charger for a three phase supply:

https://pod-point.com/products/homecharge

(scroll down the page to see the charger options)


I know three phase domestic supply is common in some other countries,
but do any UK properties have such a supply?



edit: just beaten to it by Max_Torque

Edited by PBCD on Sunday 12th August 19:23

[ruggedscotty]

very rare to have domestic houses with three phase.


Although its looking more likely that we will start to see a roll out of three phase supplies to domestic houses.

[anonymous-user]

A friend of mine is a farmer and the farm has 3 phase supply

He is mulling an EV and has looked at installing a 22kW charger. He has spoken to pod point about that £999 one.

It sounds pretty straightforward

[NeoVR]

When i had my 32A chargepoint installed, they used 6mm SWA cable for a 15m-ish run.

As im planning to get my garage rebuilt in the near future, im going to future-proof it by running 10mm SWA to that, so it will be able to take the load of a chargepoint and also the other usual garage sundries.

[anonymous-user]

PBCD said:

Roman Rhodes said:

If you have a three phase supply, what kind of charger can you get?

Using PodPoint as an example, they do a 22kW home charger for a three phase supply:

https://pod-point.com/products/homecharge

(scroll down the page to see the charger options)


I know three phase domestic supply is common in some other countries,
but do any UK properties have such a supply?



edit: just beaten to it by Max_Torque

Edited by PBCD on Sunday 12th August 19:23

Thanks - and to Max_Torque too!

We do have 3 phase at home and have been thinking about a Cayenne e-Hybrid so I was wondering if there was a benefit. Sounds like 22kW might be a good idea (whether the car can take it or not I have no clue!). The 50kW sounds like overkill though..

Cheers.