Removal and replacement procedures 18
Busway drop box
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.
You need a socket wrench for installation.
IMPORTANT:
HP recommends that you shut down the associated IT equipment and de-energize
the appropriate section of the power busway before attempting to remove or replace a busway
drop box. The corresponding branch circuit breaker is labeled on the busway.
Removing the busway drop box
1.
Turn the power off by opening both breakers on the busway drop box (1).
2.
Disconnect the PDUs that are connected to the busway drop box (2).
3.
Use a socket wrench to loosen and remove the bolt securing the busway drop box to the retaining
hardware bracket (1).
