Xantrex Technology XTR 850 Watt - Manual (Page 91)

Using Multiple Power Supplies
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3
Connecting to the Load in Local Sensing Mode (Parallel Control
Method)
Connect the power supplies in parallel to obtain a single output supply
with a higher output current set point. Set all of the outputs to the same
voltage before connecting the positive (+) and negative (–) terminals in
parallel. The total current available is the sum of the maximum currents of
each power supply.
Figure 3-7 Load Connections in Local Sensing Mode