Using a 16A Schuko socket

Jan 27, 2020 Last reply: 6 years ago 42 Replies

So, I have an EV (Leaf) which would benefit from the ability to charge using more than a 13Amp socket can supply. The supplied charging unit/cable limits to about 10A, but the car's on board charger can accept up to 3.3kW (some say 3.6kW). This would need a different EVSE than the supplied unit, AND a beefier mains socket.



Is it OK, in terms of building regs etc, to have a Schuko 16A socket on a radial from the CU?



I know I can get a proper home charge point installed, but that's not the cheapest option. TIA.


A 13A socket can supply 3.2kW, near enough.

It's your house, do as you wish. Just put the right fuses in the right places, it's not rocket science.

In terms of regs, no. (IMHO) In practice likely OK.

But would it really be that much more difficult to run a proper radial from your CU?

What about a 32 amp Commando socket?

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I'd use a 25A MCB

Of course its ok. Cookers are run this way.

And the use of a Schuko socket is OK too?

Which bit if the regs says you can't have a Schuko? What do you mean by a "proper radial"? Ta.

16A 'commando' would be better, as you're likely to find them elsewhere too (caravan sites mainly).

And if it's exterior, weatherproof versions more readily available in UK.

Owain

You need a safety interlock to ensure that the cable only goes live once it is plugged-in to the car. Charge points contain a protocol controller to handle comms with the car and to enable a contactor once safe so to do, they also have an RCD. Finally, they're supposed to be TT'd to ensure that supply and car ground potentials are similar. It's probably cheaper to buy a charge point (currently about £135 on fleabay) than building one yourself.

Hmmm, I take that last bit back. The so-called charge point for £133 seems to be just a box with a 13A socket and an RCD in it. However, there's currently a second-hand Rolec for £199.

I was thinking of getting something similar to this:

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's just a higher powered version of the one that came with the car, but needs more amps in! Hence the Q about using Schuko (which this unit comes with). I assume it has the "logic" that keeps the cable safe until it's properly connected to the car charge port.

The only one I saw for that price on eBay was just a 13A 3-pin socket. But then, I'm not the best at searching anywhere.

Aha, understood. As others have said, I doubt that you will find many (waterproof?) Schuko outlets on the highways and byways; didn't the Leaf come with a dedicated charging cable that connects to a charge point? My M-B PHEV has both a 13A charging box (unused) and a cable.

I was wrong about the charge point I mentioned earlier, but there was also a proper one listed for £200 when I looked earlier.

As long as the cable does not cross a footway and remains in your own premises, ie if you have a garage or hard standing, I'd imagine you can use what you like. Obviously it has to be safe for visitors etc, ie coming out of a window and snaking across in front of the door might be an issue if the postman breaks his leg and sues!

Brian

Oh, it doesn't have to be waterproof. It'll be going in a garage.

Yes. A charging box with 3-pin plug (which charges at about 10A), and the cable (type2 to type1 in my case).

I saw that, thanks.

If the postie trips over the cable, he shouldn't be in my garage!

More specifically they have a type A RCD.

TT is not always a requirement. However when it is you often have to TT more than the car charger.

The schuko straight off the CU, by itself wouldn't give you proper earthing for an EV.

That's what the EVSE does.

I don't see how that lines-up with 722.411.4, which says (paraphrasing) that a PME earth SHALL not be used for an outdoor vehicle charging point, with a few exceptions that would not normally apply.

A fair cop - initially I thought he wanted to just connect the car to the mains using a straight cable, without any interlock. Note to self: RTFQ.

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