Hello AskElectricians,
I have a very old commercial UPS unit I am planning to get a modern replacement for. I am trying to get a sense of how much power the load on it is drawing under normal usage. The UPS reports load with three columns: L1-N/L2, L2-N/L3, and L3-N/L1. See photo. I understand this is related to three phase power feeding it but I don't understand how to read these three columns; mainly, to get the total load do I need to add the columns together, or is this three separate readings of the same load numbers as they relate to the phases of power? Thank you.
By - LCalrissian
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