All I remember is that the Neutral needed to be twice the size of the phase conductors - including the neutral conductor to the generator which cause all sorts of procurement difficulties.
The real nonsense was that the designers were so paranoid about neutral currents that they also had three phase three wire distribution to a delta star transformer in each Sub distribution Board so the neutral current was very small as only the office lighting had a neutral connection back to the Main Board.
All I remember is that the Neutral needed to be twice the size of the phase conductors - including the neutral conductor to the generator which cause all sorts of procurement difficulties.
The real nonsense was that the designers were so paranoid about neutral currents that they also had three phase three wire distribution to a delta star transformer in each Sub distribution Board so the neutral current was very small as only the office lighting had a neutral connection back to the Main Board.