Thanks for the responses the panelbaord in questions is a 100A feeder, I will be getting voltage and neutral current information today, also. One thing that got me thinking on this panelbaord / feeder the feeder installed is a 1/0 conductor. the panel is rated 100A the load on the panel is the sum of the three phases. Why do we size conductors per phase for the total current of the panel when the individual "phase" will never see the full total load?
The individual phases will be able to see up to 100 amps for a 100 amp panelboard. If you have a panel with all line to neutral loads it is up to the installer to make sure the loads are balanced between the three phases.
You could have 300 amps of 120 volt loads in this case if balanced between phases, if you put it all on one phase you are loaded 300% of the capacity of that phase.
Load on a panel is not (or should not be) expressed in amps if it is sum of all three phases it should be expressed as volt-amps. If load is expressed in amps it should be the highest amperage of the phases.
As far as the readings in the OP is all possible loading running at time of reading? Is it possible to change anything to get more balance? Are there a lot of continuous loads or is there mostly non continuous loads.
A lot of information is needed to know if there is any problem here. These were just a few of the possible questions that are needed to know what you have.