To obtain power in excess of 3.6 kW with a three-phase 16 A × 3 phase installation, you need a three-phase charging point capable of delivering 11 kW, i.e. 16 A on each phase (16 A × 230 V × 3 phases = 11 kW). This requires the electrical installation to be three-phase and the charging point to be designed for this power. So, with a 16 A three-phase connection, you can charge up to 11 kW, which is more than 3.6 kW single-phase.