> electrical grid is split-phase 240V
The electric grid is three phase; 60 or 50 hz depending on where you are in the world. The voltage varies considerably, long distance transmission is in the kilovolts, or higher.
"split-phase 240V" happens at the transformer near your house, in North America. I don't know as much about the rest of the world, but I've always understood it to be ~440v split phase because it allows longer wires between the transformer and the house.
Yes of course, but obviously when it comes to household dishwashers those parts of the grid are not terribly important and I think we already exceeded the pedantry budget enough.
> "split-phase 240V" happens at the transformer near your house, in North America. I don't know as much about the rest of the world, but I've always understood it to be ~440v split phase because it allows longer wires between the transformer and the house.
Where I live, we have three phase 480/277V for commercial. I believe that is standard in North America, but I'm not really sure.
One of the reasons for the NACS switch is because light poles are ~270 volts, and NACS supports that voltage.