If you have 3ph sub-panel box which is fed from a main dis. panel (wire size 3 4/0 phase wire, 2/0 neutral, #4 epuipment ground). This sub panel overcurrent protection is 225amps and is feeding non-linear loads such as computers servers etc.Is it true that the 3rd harmonic current and unbalanced current would not exceed the of a 2/0 copper conductor in the future? Also will the reduce size in neutral wire (2/o)be suitable for that panel box?