I need help with the following please

I have to advise customer running costs between the following:

12 Kw Mitsubishi FD 501 DT Cassette system, Inverter , running amps are 17 amps

or 12 Kw Mitsubishi FD 501 Cassette system 3 Phase . manual says running amps are 7 amps, I presume thats 7 amps per phase

Kindly advise