Greetings fellow electricians and engineers. I have a question regarding EMS System filters( Adresses linear Vs Non linear loads). I have a project that requires an EMI fiter. The Characteristics are.

Max Applied Volts 230VAC
Operating frequency 50Hz
Maximum current Amperes 125Amps
Number of Phases 3

? How do I calculate the maximum value of the currents leakage ?
Regarding attenuation, How does one calculate the required attenuation ?.
Your opinions are much appreciated, Thank you.