I'm being asked to supply a high power electrical device to run on a US domestic supply. Ideally I'd want 240v input (120v is too low)
In some place on the web I read about 120/208v being available - the higher voltage being used for cookers/dryer etc
These voltages being the the ratio of root3:1, seem like our UK 240/415v phase to neutral and phase to phase voltages.
Elsewhere I read about centre tapped transformers being used to provide the 120v which would make the higher voltage 240v.
Can anyone clarify please
TIA
Bob