Just for logging purposes, in the FB EB status message after the voltage for each phase there seems to be the amperages (multiplied by two).
Starting to charge on a 3-phase 13A circuit:
[2020-04-11 21:30:43] STATS - 5 kWh 234V 234V 236V 0A 0A 0A == eb95410000000500ea00ea00ec000000000086...