71–80 of 90 posts
Why use Tesla wall connector in a first place and not just the standard nema/dryer outlet with the Tesla cord/charger? It seems like people are overpaying for nothing.
Do dryer outlets work outdoors?
One thing I'm really scared of is EV charger software being modified by users, hackers or bugs to pull max power at times that don't suit the grid. In the UK, for example 10 million EVs all pulling 7kw would overwhelm the roughly 70GW potential of the grid. Even a million EVs charging at an inconvenient time could add a 7GW draw which is enough cause a problem.
Earlier quoted context omitted.
I don't think there are any restrictions. I think j1772 might just work with an adapter (adapt from the nacs plug to the j1772 plug) I thought tesla even made a j1772 native wall connector.
There are some restrictions. I had the foolish idea of installing a Tesla charger at home to charge my Bolt. I’ve been unable to ever use it. The wall charger works fine with Teslas. My car and adapter charge fine at Tesla superchargers. But the home Tesla charger refuses to charge my Bolt. (Yes I disabled vehicle restrictions and tried all sorts of combinations of settings for weeks before giving up. Tesla support w…
Just don't try to use that adapter on another NACS connector like the Mobile Connector, it'll get stuck and you'll have to do some magnet shenanigans to get it off (ask me how I know...)
NACS on Level 2 has the same number of pins, but speaks a different protocol than J1772, so just a normal "dumb" adapter won't work. You either need a Connector that can speak J1772, or a TeslaTap.
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It will first damage the batteries very fast, second, most users don't want to mess with that, they want to plug and play. So, on both counts your fears are misplaced.
It sounds like a genuine attack vector to me. If someone hacked say teslas firmware supply chain and made all chargers pull max power at the same time, it could be a national infrastructure crippling attack.
One thing I'm really scared of is EV charger software being modified by users, hackers or bugs to pull max power at times that don't suit the grid. In the UK, for example 10 million EVs all pulling 7kw would overwhelm the roughly 70GW potential of the grid. Even a million EVs charging at an inconvenient time could add a 7GW draw which is enough cause a problem.
One thing I'm really scared of is EV charger software being modified by users, hackers or bugs to pull max power at times that don't suit the grid. In the UK, for example 10 million EVs all pulling 7kw would overwhelm the roughly 70GW potential of the grid. Even a million EVs charging at an inconvenient time could add a 7GW draw which is enough cause a problem.
Incoming voltage monitoring is a requirement for EV chargers in the UK. The sudden huge demand would result in a voltage drop, the chargers would then detect the under-voltage condition and they'd stop charging.
Modern grids have batteries to manage instantaneous spikes of demand so there’d be a race.
Earlier quoted context omitted.
It sounds like a genuine attack vector to me. If someone hacked say teslas firmware supply chain and made all chargers pull max power at the same time, it could be a national infrastructure crippling attack.
Where would they dump the power? You need a load of some sort. 7kW requires a voltage drop between a hot and a neutral. If it's a 1V drop then you're going to get a hot load of amps.
Im thinking in an attack situation hackers might plan for say a 3am mass dump and pull on the grid by all cars that are charging overnight. This would definitely be possible by altering firmware, and would be bad enough to blow some local substations for sure.
Earlier quoted context omitted.
It sounds like a genuine attack vector to me. If someone hacked say teslas firmware supply chain and made all chargers pull max power at the same time, it could be a national infrastructure crippling attack.
Where would they dump the power? You need a load of some sort. 7kW requires a voltage drop between a hot and a neutral. If it's a 1V drop then you're going to get a hot load of amps.
Earlier quoted context omitted.
> For example, if I am able to gain root access to a WiFi access point I own, even though the vendor has tried to prevent it, then yes, I would call it a hack. Yep. The owner of the device can sue you.
Why would they sue themselves?