kW to amps
A 7.4 kW home charger is 32 A on a single-phase 230 V supply — which is why it needs a dedicated 32 A circuit and usually a supply upgrade check. The same 7.4 kW on a 400 V three-phase supply is only 10.7 A per line, which is why three-phase charging at 11 or 22 kW is common where three-phase domestic supplies are normal.
Estimates for planning and study. Fixed wiring must be designed and installed to the wiring regulations that apply where you are, by someone competent to do it.
Single-phase current is kW × 1000 ÷ (V × pf). Three-phase divides additionally by √3. A 7.4 kW load is 32 A at 230 V single phase but only 10.7 A per line at 400 V three phase.
How to convert kW to amps
This conversion is where domestic electrical limits become concrete. A typical UK house has an 80 or 100 A main fuse; a Dutch one often 25 or 35 A per phase across three phases. Adding a 7.4 kW charger, an 11 kW shower and an induction hob to the same single-phase supply is arithmetic that stops working quickly, which is why load management and supply upgrades have become such a common part of home electrification.
Questions
32 A at 230 V single phase, or 10.7 A per line at 400 V three phase, at unity power factor.