This command creates power supplies that are highly optimized by breaking runs to create the maximum load per power supply and therefore the fewest number of power supplies possible.
The level of granularity of this power supply loading option is down to the individual module. This means that each power supply will be loaded to its margin, or to 100% if there is no margin.
In this example, the power supply has a 12% margin, so the first power supply loads to 88%, then breaks the run and adds a second power supply.