Tesla Gen 3 Wall Connector 48A Single Phase

Hello, I have add the integration for my Tesla Gen 3 Wall Connector 48A Single Phase. and there is 3 sensors for current (phase a,b and c), but I have 48A single phase, so what is the phase a,b and c current? none of them is 48A when I charge in 48A. there is also 3 phase voltage. the grid voltage sensor match my voltage, but there is no grid current.

any idea?

thx