EV Charging.

[pete01]

I want to do the course.

Im gonna practice on my own house at some point.

My house has a 60 amp fuse, if I get that replaced with a 100 amp and kmf 80 amp to my house (16mm tails)

Fit another consumer unit with surge protection from henly blocks with 32 amp rcbo to feed the EV charger...


Never done one or had any dealings with them before, is that about the jist of it?

 

[trojanhawrs]

RCBO/RCD must be double pole and normally its recommended to fit a B40. Why wouldn't you just upgrade the tails?
You could also just fit into your own consumer unit if you have spare ways and it's more convenient.

 

[pete01]

RCBO/RCD must be double pole and normally its recommended to fit a B40. Why wouldn't you just upgrade the tails?
You could also just fit into your own consumer unit if you have spare ways and it's more convenient.

Yes I thought about that but its not that easy but I think it will do that....change from a split load to an all rcd and fun a 6mm T&E out for the charger.


Sound good?

 

[trojanhawrs]

You need 2 cores for a CT clamp which will need to clip over one of the meter tails. So you could run 2 separate cables or you can use a specific EV cable which will have a data cable inside it, they typically come in SWA or hi-tuff. If you've got generation some of the chargers support a second CT as well for measuring that and charging when you have a surplus

 

[ericmark]

My son got himself an EV, some connection to where he works, but the whole of the installation and the supplying of the vehicle was through Octopus, and to get the special low rates, Octopus had to do the installation.

This practice means, there is not as much work as one thinks for the sole trader to fit EV charging points unless they can get a contract with the likes of Octopus.

Also Octopus set out their own rules, it did not matter how suitable my sons consumer unit was to take the EV supply from, Octopus would not allow it.

OK next door has an EV charging point, and he does not have an EV, he is a motoring corespondent, so he tests EVs, but does not have his own. But people like him must be few and far between.

It seems every week we see the rules change, and not sure I would want to spend out to get qualifications when not sure where it is all going, and how many extra hours will be needed to upgrade, and all the differences council to council over what can and can't be done.

 

[pete01]

My son got himself an EV, some connection to where he works, but the whole of the installation and the supplying of the vehicle was through Octopus, and to get the special low rates, Octopus had to do the installation.

This practice means, there is not as much work as one thinks for the sole trader to fit EV charging points unless they can get a contract with the likes of Octopus.

Also Octopus set out their own rules, it did not matter how suitable my sons consumer unit was to take the EV supply from, Octopus would not allow it.

OK next door has an EV charging point, and he does not have an EV, he is a motoring corespondent, so he tests EVs, but does not have his own. But people like him must be few and far between.

It seems every week we see the rules change, and not sure I would want to spend out to get qualifications when not sure where it is all going, and how many extra hours will be needed to upgrade, and all the differences council to council over what can and can't be done.

I just want to be able to do them incase I get asked, I've had to say no in the past, that means a different electrician getting in on my jobs....cant have that.

 

[Gridcap]

pete01, a few things on the supply side. The cut-out fuse is the DNO's, so you can't change it or pull it yourself. Book the DNO or your supplier's meter operator for that, including when you fit the isolator.
Every charger has to be reported to the DNO. If it's the only new device, the supply isn't looped, there's no battery or export generation, and the house's maximum demand including the charger stays at 60 A or under, you install and notify within 28 days. A fail-safe load limiter on the charger can count towards keeping under 60 A, so on some houses the fuse upgrade isn't needed. Anything else is apply first, and the DNO decides what's needed.
If you do go to 100 A, most DNOs will want 25 mm² tails, and the isolator should be rated at least 100 A, not 80 A. Photograph the cut-out and check whether the supply is looped before you price it. If it is, the DNO will usually unloop it before fitting a bigger fuse, and that takes a lot longer than a fuse swap.
Alan P.