User's Manual

Power, electrical, and controls 31
• Non-redundant power installation (1N load)—Both busways are powered from the same power feed.
• Redundant power installation (2N load)—Each busway is powered from parallel power paths from
independent power feeds.
Drop boxes
The internal electrical busways provide a location to connect each of the drop boxes, which then power the
PDUs. Stagger the drop boxes on the electrical busways by connecting one drop box to busway #1 and
connecting the next drop box to busway #2. A staggered configuration enables load balancing with the rack
equipment and is necessary to ensure redundancy.