@27V in:
Off Leakage Current : 6mA (150 mW)
Idle Current: 760 mA (20 W)

Hair dryer load: 234.8V, 1.072A, 177.5W (PF=-0.7, 251VA)
Pin = 218 W, Ploss = 40.5 W, eff=81.4%

Hair dryer load 2: 234.2V, 1.473A, 344.8W (PF=-1, 344.8W)
Pin = 379.3W, (eff=90.7%)

Hair dry 3: 724W Pin=781.29 (eff=92.6 %)
At output powers higher than 100A, the input current waveform gets some nasty spikes >100A, which are outside of the range of my current probe.

The inverter outputs a 3-level rectangular wave-form, no SPWM.

For input DC measurement I used INA228 power monitor (40mV FSR, conversion times 280µs, averaging over full 50 Hz cycle) with a Murata 150A, 150mV shunt resistor.

For AC measurement a metrawatt metrahit energy multimeter.