Hi and welcome to the forums.
Not to be obvious, but actual power load can be measured easily at several points in the distribution system, depending on your interest. And, the best way to balance loads with redundant PDUs is to split the load between them, making sure that neither circuit is loaded to more than 50% of capacity.
Can you elaborate on what you mean? Is this a homework assignment, or are you involved with an actual data center?
Ken
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