Oilpan4 wrote:My little miller model 250 is in the garage and has a dedicated 125 amp single phase circuit on 4 gauge lines going to it.
My little amateur welding circuit should easily handle about 21.6kw continuously.
The leaf battery has a max charging voltage of around 400v. With a glass ceiling of 400v and the machines max current output limited to 50 amps, that gets me 20kw.
Yes, that pencils out on paper but not in practice. By the time the battery is at 400 volts the current is way down. Max current is at ~ 350 volts. So the '25 kW CHAdeMO' will peak at about 0.35*50 = 17.5 kW. I'll guess that you could manage a 15 kW average charge going from 20 - 80% SoC.
Still pretty sweet, so long as you do not mind the cost, bulk and hassle. I'm learning to appreciate (at least theoretically) the 11 kW OBC in my Model 3. Perhaps I should have bought a 50 or 60 or 80 Amp EVSE instead of the 40 Amp I have just for bragging rights. My 6 gauge cable and 8 foot run is enough for 50 Amps and depending on the rating it might support up to 75 Amps, good for a '80 Amp EVSE' that derates to a maximum 64 Amp pull.
You have caused me to regret not spending less than $100 more for the 9.6 kW EVSE instead of the lowly 7.8 kW I have. I blame my wife for peering over my shoulder at the EV cost spreadsheet although the truth is that at the time I did not realize that the Clipper Creek HCS40 I bought was labeled to match the breaker.