EV general discussion

My tesla wall charger keeps complaining its "too hot". At the point of connection to the house electricals.
Unsure why, I used the correct mm2 cable.
it's doing it from the start ? or is it monitoring evolving voltage drop due to heat somewhere/cable, and then coming to that conclusion.
e: what happens if you charge slower
 
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That's more than enough for my typical daily use

To be honest, I think 60-70 miles a night is a bit ambitious honestly. With a granny charger the effective charge speed is about 2 kW after overheads&losses, about 12 kWh a night. To get even the 60 miles from that you'd need to average 5 mi/kWh, not very realistic in most cases. In reality you probably add around 50 miles in the summer, and about 40 in the winter. Still not terrible, and I use such a charger too, but best not to go into that thinking it could do 70 and you have lots of headroom!
 
it's doing it from the start ? or is it monitoring evolving voltage drop due to heat somewhere/cable, and then coming to that conclusion.
e: what happens if you charge slower
Lasts about 30mins then starts to throttle.
If i start at 16A it never does it. Only when at 32A
 
To be honest, I think 60-70 miles a night is a bit ambitious honestly. With a granny charger the effective charge speed is about 2 kW after overheads&losses, about 12 kWh a night. To get even the 60 miles from that you'd need to average 5 mi/kWh, not very realistic in most cases. In reality you probably add around 50 miles in the summer, and about 40 in the winter. Still not terrible, and I use such a charger too, but best not to go into that thinking it could do 70 and you have lots of headroom!

Even that's fine, my car gets used for very short journeys most of the week and sits on the driveway at least 3 days a week so granny charging isn't a big deal for me, it's only for the weekend trips and day trips where it becomes an issue
 
Lasts about 30mins then starts to throttle.
If i start at 16A it never does it. Only when at 32A
(and if you reset and restart immediately at 32A it throttles immediately ie. is it a voltage change over time that triggers it.)
hmmh if it is genuinely heat at the plug - what brand of socket had you got - myabe you'd said ?I had specced something with an interlock too,
(probably naively) thinking it would provide a more electrically robust connection, .. similar to buying a good quality MK socket
 
the handling lane ?
yes ok had forgotten he didn't get what I will, to connect to similar cu with pen

GNu324L.png
 
Lasts about 30mins then starts to throttle.
If i start at 16A it never does it. Only when at 32A
prob an internal issue. Mates ninja bbq was similar and found the neutral in the plug was slightly clamping insulation. I imagine a wiring fault inside Any warranty on it ?
 
Nothing Tesla about that. It’s a generic type 2 commando cable :( :confused:
It's also no cheaper than a high quality one from Tesla directly. They are £180 for the granny charger that comes with a 3 pin pig tail and a carrying case and you need an extra £30 for the 32A commando pig tail. They also have a pigtail for any single phase supply you'd find in Europe if that is your thing.
 
It's also no cheaper than a high quality one from Tesla directly. They are £180 for the granny charger that comes with a 3 pin pig tail and a carrying case and you need an extra £30 for the 32A commando pig tail. They also have a pigtail for any single phase supply you'd find in Europe if that is your thing.
Why would you want that though?
You still need all the proper wiring etc etc to feed them 32A?
Just seems odd to do it that way vs a proper fixed wall mounted solution
 
Why would you want that though?
You still need all the proper wiring etc etc to feed them 32A?
Just seems odd to do it that way vs a proper fixed wall mounted solution
It’s significantly cheaper.

A mobile connector is £200 vs a ‘smart charger’ at £500-£800.

You can also unplug said charger and take it with you as needed. Chargers also have a finite life, when it dies, anyone can plug in a new one rather than having to get an electrician in.

Also if you like the tin foil, it’s good as your data isn’t accessible as it’s not reporting to the cloud.

The downside is they are not exactly neat, if you don’t secure it, some might nick it and using commando sockets are a bit of a legal grey area when it comes to electrical regs if you do it on the mega cheap without PEN fault protection.
 
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Yes mobile connector is much cheaper - if you have a smart car that works with the likes of IOG then why spend more ?
in my case the commando socket (connected to PEN protected CU) is also free fro other purposes in the garage - 3KW pressure washer ..
if V2G is coming on line won't have invested too much, on something that will have limited lifespan .. could take it if I move or sell easily.
 
Neither installed isn’t a fair comparison…
No, but the installation costs range from less for a mobile connector if you take the ‘don’t care about PEN fault protection’ approach to similar if you do.

EV chargers installers add on a decent margin to the install a charger they supply because they have to provide support for the device they supplied and installed. They also have to do the DNO notification which takes time and they charge accordingly as they should.

By comparison there isn’t much that can go wrong with a commando socket and no DNO notification is required.

That said, I don’t have a commando socket because I prefer the neater solution and the additional functionality of a proper smart charger.

But if you just want the cheapest mechanism to get electricity from your house into your car, that’s either a 3 pin or a commando socket.
 
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