Comment on The "standard" car charger is usually overkill—but your electrician might not know that [32:26]
tankplanker@lemmy.world 1 week ago
We have a granny charger that came with one of our EVs that we use as a backup and with our caravan to charge on sites that allow it. As I am UK it tops out at 2.4kw (10A @ 240v) and its annoyingly slow even charging for more than 12 hours at a time.
Our main home charger is 7kw, and as we get cheap electric every night for 7p a KwH for 5 hours, we can charge about 40kwh in that time period. Means even our largest battery is fully charged in two nights from completely empty. If we tried that with the granny charger it would cost significantly more, as it would be up to 40p a KwH outside of the main hours and take 40 hours to charge the same amount.
Now if you doing only a few miles a day, less than 40 miles (4 miles per KwH, charge for the 5 cheap hours using the cars charging timer, charge 10 KwH), it might work out ok for you, but then charging every day cannot be good for the battery? I know it would get annoying quite quickly. It would also get pretty painful if you have more than one EV, we have three between us and the kids, so its not remotely practical.
RhondaSandTits@lemmy.sdf.org 1 week ago
Granny chargin’, not triple phasing like you should.
tankplanker@lemmy.world 1 week ago
You almost had me charging? You never had me charging - you never had your car charging, it had tripped the socket
Pedantic but: 7kw isn’t three phase in the UK, just 30A. Three phase electric can give you up to 22kw in the UK for charging, obviously not every EV can charge that fast, most only go up to 11kw AC. I would kill for that extra charging speed but I can’t justify the extra cost and effort to get it fitted by the electric company
XeroxCool@lemmy.world 1 week ago
You don’t double clutch on upshifts either (it was a drag race) so I’d say the parody is accurate
tankplanker@lemmy.world 1 week ago
Well I did say I was being pedantic, which is absolutely the best way to watch fast and furious with friends
HiTekRedNek@lemmy.world 1 week ago
Uh.
I drove semi trucks in the US for years…
You’d better either double clutch or float those gears, because if you don’t, you’re destroying your clutch brake, which means you’ll have trouble getting it into gear from a dead stop. That applies for both upshifts and downshifts.
Ever sit next to an old truck or bus and hear them grinding gears to get into gear?
That’s due to the clutch brake failing to stop the flywheel.
All semi trucks in the US use synchro-less manual transmissions.
When shifting a syncro-less transmission, YOU are the synchro.
The clutch in these trucks has 2 positions. You either just barely engage the clutch enough to break contact, or you depress it fully to engage the clutch brake and (attempt to) stop the flywheel from spinning.
If you do the second one while shifting a moving vehicle, you’re causing undue wear and tear on the aforementioned clutch brake.