As you can see there are positive and negative aspects to three phase supplies.
If you get the electrician to design the installation taking account of the problems identified by Spinlondon then you should be OK.
The layout of the building and areas of use and their loading would be a key aspect in choosing the most suitable arrangement, if you have all the IT equipment at one end of the building and all the distribution and loading equipment at the other end then maybe three single phase tracks for IT and one three phase track for the heavier loading but lower earth leakage.
Probably your best answers are going to come from someone on the ground who can adequately assess the situation.
It does occur to me that if the installation was fully equipped with three single phase tracks at each location, but the tracks are assigned to specific items with a schedule of permissible modifications then this would probably resolve the problems in all cases, but could be initially costly and have a lot of redundant track in place,
If you get the electrician to design the installation taking account of the problems identified by Spinlondon then you should be OK.
The layout of the building and areas of use and their loading would be a key aspect in choosing the most suitable arrangement, if you have all the IT equipment at one end of the building and all the distribution and loading equipment at the other end then maybe three single phase tracks for IT and one three phase track for the heavier loading but lower earth leakage.
Probably your best answers are going to come from someone on the ground who can adequately assess the situation.
It does occur to me that if the installation was fully equipped with three single phase tracks at each location, but the tracks are assigned to specific items with a schedule of permissible modifications then this would probably resolve the problems in all cases, but could be initially costly and have a lot of redundant track in place,