miimura
Well-Known Member
He's right. Each cabinet can only take 350kVA from the grid, but they are also DC interconnected with any cabinet taking up to 575kW DC from other cabinets on top of its own AC draw. If you happened to have 4 cars nearly empty plug into the same cabinet, they could all get up to ~222kW at the same time. Of course, they are betting on people arriving at different times with different amounts of possible draw, so 1050kVA for 12 stalls is usually enough.@tij664
Coincidence factors for EV charging have been discussed (I work for the utility), but there is some reluctance to use the same factors as other loads because EV chargers do fill up and max out (just look at Fashion Valley's chargers).
@TerranApart
I haven't been there to study the nameplate labels and the layout, but if your numbers are correct then I don't see how these units can get close to 250 kW with a few cars there. I'll have to do some more reading about them...
BTW, isn't this the site that has conduits for a 4th cabinet and 4 more stalls that are not installed? 1300kVA would be a better utilization of the 1500kVA transformer.