Munson

The EU is harmonized at 230 volts 50 Hz, one hot the other is neutral and a safety ground. Unbalanced to ground.

In the USA it can be two versions, three wire 240 and/or 240 four wire. Both balanced to ground

Three wire will be two hots of 120VAC on opposite legs to yield 240VAC single phase and a safety ground, no neutral present.

Four wire will be two hots of 120VAC on opposite legs to yield 240VAC single, a neutral and a safety ground.

Hope this clarifies the situation.