3 phase dB and eddy currents

[cadthesparks]

Recently started a retrofit where the 3 phase dB has been fitted with bushes through the galv trunking. The single phase supplies outgoing have been separated and lines pulled through one, neutrals another and the CPCs through the last one. My supervisor says this is ok, as it is a 3 phase db, I disagree. What's the thoughts.

 

[westward10]

Three phase or single phase it is not correct.