it's up nice and early this morning we'll travel down to watford but what we're here
to see joe we're here to see the installation of an ev charge point and we're looking at one that
we've not seen installed before we're going to see the installation of a Tesla charger
so that's going to be interesting we're here with MJ electrical services you're going off
to speak to Matt and I'm gonna go and find Kev and grab yourself a cup of tea let's get started
hello mate how are you doing kev cup of tea love a cup of tea i've
left Joe with Matt doing the technical stuff so it's important that we get refreshed
absolutely this is matt from MJjelectrical good to see you matt morning joe I'd have to shake
your hand but we're still mid Covid so that's going to happen absolutely this is a really nice
moment for me because matt was in one of the very first groups I ever taught at the college
and we've kind of obviously gone our separate ways for a long time and just circled back together
yeah and you're like married and stuff married yeah madness madness he was a boy when i
started teaching him but there we go i think i've weathered every bit as well as matt has i'd say so
yeah that's very kind so let's talk a little bit more about this installation so we're installing
an EV charge point uh it's going outside and the car is easy to charge outside so what are
some of the considerations that you've taken for this installation so if we start from the supply
side of this and we've got a three-phase board in there linked single-phase tails and we're going to
be installing the circuit surface in the inside of the garage and so we don't need to have any
considerations for rcd protection on the circuit for the cable the cabling yep so we're going to
install the MCB in the board to supply and we've had to buy a Garo pen monitor okay yeah so it's
looking for PME faults yep yep and as the tesla charger don't have this integrated into their
devices and so we're going to supply that that's also got a type B RCD built into it and has to be
type b RCD due to the high levels of dc current that the headlight puts back into the circuit
um apart from that we've uh we've got the height set at 1.2 there yeah in accordance with your
video good lad in here i taught him everything you know it was very good no that's fantastic so
it's nice clearly a lot of thought got into this so we're gonna we're gonna have a look
at some installation work next up we've brilliant excellent so now we'd like to pose a question for
joe i'm going to post one for you today joe the ev charging point from tesla doesn't qualify for
the OLEV grant why is that well that's because the tesla charger doesn't have internet connectivity
and in order to be approved for the olef grant the charger itself has to be able to connect
the internet so that the charging process can be controlled remotely now that doesn't mean that
the tesla technology is lagging behind in any way because we know that to be completely not
true but in the case of the tesla the internet connectivity that controls the charging process
is actually in the car itself right okay so there's nothing stopping me however even
though i may have a tesla i've actually having one of the other manufacturers that do qualify
absolutely yeah you can get one of those installed on the olev grant and it will charge your tesla up
but obviously if you want to go with the full tesla car and charger combination then you're
not going to get this approved by the olev grant but that just means it gets installed without the
payment from the government so Kev you've rapidly installed some mini trunk in for your cable to
review charging point is there any precautions you've taken yeah obviously in a fire condition
potentially the cable could fall right so that's precaution we're using an anchor fixing in the
plasterboard i like that that's a metal fixing i like that it is it will be securing a fire clip
which will obviously hold the cable in position inside the mini trunking and i can see you've
put several throughout the run as well we have yes so as always with installing the ev charging
point we've got to be thinking about the earthing arrangement and we know the earthing arrangement
here is a TN-C-S why is that so important jug well that's so important because of course we know that
the pen conductor if that becomes disconnected out in the road that's going to raise all of the
metal work in the building up to 230 volts and potentially that could include the bodywork of
the car which then means if you're outside you've got a reasonable contact with the literal earth
you touch the car that's gonna lead to an accident so there has to be some equipment in place to try
and prevent that from happening and matt's decided that he's gonna install here this unit from garrow
which offers uh protection against broken pens uh so it's got first of all it's got this rcd in
here first of all that's a type b rcd and the rcd now is actually going to be fitted at the
installation of the mains end well we didn't think it was at the start so the cable itself
is now rcd protected does it need to be dropped it doesn't because the cable has been surface mounted
it's not buried in the wall it doesn't need rcd protection because there's no chance that
someone's going to drill through it accidentally so we've kind of got incidental rcd protection for
the cable and how is it going to know if there is a pen for this GARO unit how will it detect
that pinfall well that's where this clever bit comes in here so what we've got here is a bit
of kit that monitors the voltages now that's to comply with indent 4 of regulation 722.41
and that actually means that this can be connected to a tncs system because if the voltage goes above
253 volts or drops below 207 volts then this device will disconnect this contactor and
you'll notice that wired through that you've got the line the neutral and the cpc as well
which allows you to be in full accordance with in length by disconnecting the protective conductor
under those circuits absolutely so at the stage where you're connecting up the charger itself matt
now for a lot of uh electricians thinking about going into the world of ev charger installation
they're probably really nervous about the actual connecting up and what complicated connections
need to be made inside the charger there so can you just talk us through what you've got you're
struggling a bit there yeah no i can't understand that and there was a bit of head scratching
got the notebook out yeah drew a few wiring diagrams yeah then opened the cover and saw live
neutral on earth so nice yeah that's basically just a glorified shower isn't it yes it is
very simple to connect very nice so line neutral cpc and you're away and tesla have given us a nice
bit of room to work in as well so it's always an added bonus again thank you elon musk what a guy
we've had a really good day with matt and kevin today thank you both very much for your time good
to see you it's been really good we've seen the smooth process of the charger being installed it
didn't represent too many challenges at all which is nice we're not going to subject you to the
testing procedure we've covered how to do that on a different video on the channel so go and check
that out but we are at that most exciting moment now where we get to remove the protective film
from the front of the charger like that lovely moment when you take it off your new phone so
we're gonna let matt have that privilege it goes against grain a bit for me because i usually leave
it on yeah i'm having my testosterone i noticed you had that on your testosterone but i've got to
go here we go look at that lovely and lovely very good so thanks again gents thanks for coming down
you