cable size 30 kw motor star delta?

Hi, were upgrading a motor at work from 11kw to 18.5kw. The motor is currently connected star delta with 6x6mm cores going out to the motor. ... How about 30 amps x 125% being the circuit conductor current for cable sizing.

For star delta stater,the motor connection must have 6 cables from control panel ... .. Rating size for contactor depend on kW or Full load ampere. ... capacitors to a 30KW three phase motor in the star delta starter control panel.

I've only a lil` experience in motor sizing & calculation for contactor ... 3) 193- TCC45 (30 - 45) Amp ... Size each one according to your calculations and the local codes ... For a star-delta starter you have the possibility to place the overload ... for estimating cos phi x efficiency and not 0.85 for a 45 kW motor.