Reliably having 3 phase 230 V (thus 400 V delta between two phases) makes a big difference from single phase 120 V. Usually rated at 16 A too, available from each phase pair.

Almost 10 kW available at the peak (although almost nothing made for regular homes use it that much, aside from electric cars).

everycalculators.com/kilowatt-calculator-3-phase.…

As compared to a US outlet typically limited to 20 A at 120 V in one phase, giving you 2,4 kW (a quarter) or 15 A at 1,8 kW.