Just Installed an EV Charger

[Mechanician]

Historically the UK was 240V and continental Europe was 220V. In order to harmonise they renamed both as 230 Volts but it was just a naming exercise and in fact nothing happened in practice as the legal tolerances on supply voltage allowed the UK to continue at 240 Volts.

I'm curious is the US 220volts really across two phases or is it a centre tapped transformer supply which would be safer.

This is a good reference.

https://en.wikipedia.org/wiki/Split-phase_electric_power

 

[Sedin26]

My building (a condo) is wired for 208vac. Go figure.

Not 100% sure about the US but in Canada most Condo or apartment buildings are 208v 3-Phase, at least in my area. My understanding is it's quite common in the US as well but I can't say for sure..

 

[meep]

Not 100% sure about the US but in Canada most Condo or apartment buildings are 208v 3-Phase, at least in my area. My understanding is it's quite common in the US as well but I can't say for sure..

Most residential is single split phase 120/240. I’ve only seen 3 phase (120/208) in commercial buildings in the US but my experience here is very limited.