Power Density - Single or Three Phase?

Hello all,


Quick question regarding initial load assessments using power densities.


Keeping my numbers simple, lets say we take a small power density of 20W/m2, over a GIA of 1000m2, this gives a max demand of 20kW. Now i have always taken this to be a single phase load, and so if the space is being served via a three phase power supply, would it be correct to split this 20kW across the three phases (assuming perfect balance across phases). i.e. the small power maximum demand for the space would be 6.7kW.


Any help would be appreciated.


Thanks in advance,


Simon.