As a part p installer can i install a 7kw ev charging point?

I have a cable supply to an outside IP65 box on my drive. When we refurbished the house I put a SWA  cable to supply power to our  temporary accommodation including an electric shower. As we now let the property I was thinking of converting this to an EV Charging point, possibly a 7kw one ( the supply is comfortably big enough) . I don't think i need any further qualifications to do this, just a part p notification (for amendment to an outside circuit) and possibly i need to inform the DNO? Clearly I could just use the 13A  outlet, but thought it might be a "selling point"?

The NICEIC website seems to confirm that there's no need to actually register a charger under part p, just  the circuit alteration or installation if necessary.. Its quite hard to research this online, I just get reams of companies wanting to sell me one, can anyone on here shed a bit more light on this?

Thanks.  Dave 

  • Have you chosen what EVSE you want to have installed?  I would say that is the first step.  Next step would be to see what the manufacturer recommends is needed and what functions or features the chargers has.  Eg it might require a type B RCBO in the consumer unit, it may not have provision for PEN fault detection, will the unit be tethered or untethered.  You may also need additional Earthing via a rod or plate into the ground. 

    Might be worth having a read of the IET COP

    Code of Practice for Electric Vehicle Charging Equipment Installation, 5th Edition

  • Thanks, but I'm trying to find out if it needs additional registration beyond my part p: I've heard that I may need to request or tell the DNO, although i think for a single domestic installation its unlikely to be an issue? There's not much point me looking at chargers unless I can install one without having any issues regards registration.  As long as I'm not breaking any regulations or anything, I'll research  and find a suitable charger. If its not that simple I'll stick with the 13A socket. 

  • I've heard that I may need to request or tell the DNO, although i think for a single domestic installation its unlikely to be an issue?

    I suspect the DNO will still want notifying - for smaller domestics it can be after the event, larger ones have to be agreed beforehand.

    https://www.gov.uk/government/publications/connecting-electric-vehicle-chargepoints-to-the-electricity-network/connecting-electric-vehicle-chargepoints-to-the-electricity-network

    The point being the DNO will start to have to reinforce the supply when the number in a given area start to climb.

       - Andy.

  • The DNO will want to know if the agreed after diversity demand will be exceeded. Contrary to what you might think, it is unlikely to be 23 kVA on a 100 A supply.

    Circuit alterations do not need to be notified in England.

  • I don't think i need any further qualifications to do this

    Legally, I don't think there' any demand for "qualifications" for any normal electrical work - you need to be competent of course, and while paper qualifications are often a convenient method of being able to demonstrate competence, they're not of themselves a requirement.

    Part P still allows DIY - the likes of me just has the pre-notify and pay an exorbitant fee for certain works, but it's still legally legit.

    As yours is rented, the The Electrical Safety Standards in the Private Rented Sector regulations may apply (certainly does in England - I'm not sure if the other nations of the UK have an equivalent) - but as I read it the demand for "qualified" person do to the work only applies the the EICR and any subsequent remedials -  other work only requires adherence to standards (i.e. BS 7671 .... we can argue about exactly which version) so that reduces to just old fashioned competency again.

    Obviously you'd have to comply with section 722 of BS 7671 (including all the awkward bits about using PME, or not) - that even has something to say if you want to use a 13A socket (for a granny lead). Plus all the usual general requirements, such as keeping things connected to different earthing systems out of reach of each other.

    There are other things to keep in mind - e.g. https://www.gov.uk/guidance/regulations-electric-vehicle-smart-charge-points - which may mean you'd need some means of data communication with the charge point - which may mean running a CAT 5 or similar alongside the power cable (if wireless isn't an option). Similarly some charge points can limit the load to ensure the overall supply isn't overloaded - which again needs an ELV connection back to the house (for a CT).

      - Andy.

  • Hi, thanks. So i had a look a look on the .gov site yesterday,  didn't know about an internet connection up there but it's a simple job if I use a powerlines extender. I need  to notify the DNO, but not request as my supply has enough spare capacity ( I've done an assessment as per and have a 100A fuse/cut out, no electric used for heating or showers) I'm in Wales so altering an outside supply WILL require part p notification.. I need to do a bit more homework, make sure I do. the earthing correctly. Its a holiday let next to my main home, not a long term rental and the supply for the charger comes from my house, separately metered supply, just happens that they park on our land. Should give me something to research through the winter. Thanks for you input.

    Dave

  • Arguably the bar is lower for something you put in yourself on your own property, as it is you that will suffer the consequences, and you that will (presumably not bother to) dob yourself in to the relevant authorities if a bad job is done...

    For part P a new circuit is notifiable, and in Wales rather more, including any outdoor wiring I think (and I wonder how often that notification never occurs and wiring appears by magic).


    For the DNO, all new fixed loads over 3kW are notifiable, but we know that electric showers and cookers have been added for many years without anyone actually bothering with this.

    (find your DNO here https://www.energynetworks.org/customers/find-my-network-operator )


    But a car charger is likely to be on for many hours, so either a load limit circuit with current sensor on the meter tails or a supply uprate may be in order - especially if your house has a shared feed. Without knowing your DNO I do not know their policy, but round here (SSE) they seem to take a similar line to solar power, where usually they need to be told within so many days after the fact and it feeds into their worry plan about the rating of the transformers at the end of the street. Some local substation transformers to me seem to have sprouted a fan kit in the last year, which I assume is a cheaper  halfway house compared to a full transformer upgrade, though if this is EV driven or solar power, or just heating and load creep generally,  I cannot tell.
    Note that there are several conditions (higher power, fully loaded supply ) that pre-notification is needed. Your DNO will know.

    The paper trail consideration may come when trying to sell the house at some future point, but at the very worst it gets sold with the charger temporarily disabled. Note that as others have said, many chargers expect a data connection back to the mothership, though why, and what happens without it is not always made clear.


    Mike.

  • You need to be a little clearer as to what you mean. To modify an existing circuit, you do not need to do any notification for the electrical work (Part P). For a car charger, the DNO should be informed. There are various caveats. Total demand should be assessed before fitting the car charger, and, in many cases,if the demand os low enough, you may fit the charger, then inform the DNO later. As has been stated earlier, you do need to inform them, either before or after. I havent got the new Code of Practice yet, the requirements for notifying beforehand is in there, if max demand is low enough, you may be able to inform them after fitting.

    All the relevant links and forms are available online.

  • You are legally obliged to notify the DNO through the ENA forms, either as Connect and Notify or Apply to Connect (as appropriate).