Areadily accessibletwo-poled disconnect device mustbe incorporatedin thefixed wiring.Statement
1022
Warning
Usecopper conductorsonly. Statement 1025Warning
Thisproduct requires short-circuit (overcurrent) protection, to be provided as part of the building installation.
Installonly in accordance with national and local wiring regulations. Statement 1045
Warning
Wheninstalling or replacing the unit, the ground connection must always be made first and disconnected
last.Statement 1046
Warning
Installationof theequipment must complywith localand nationalelectrical codes. Statement1074Warning
Hazardousvoltage or energy may be present on DC power terminals. Always replace cover when terminals
arenot in service. Be sure uninsulated conductors are not accessible when cover is in place. Statement
1075
Warning
Procedure
Step 1 Installthe DC power supply in the chassis, making note of the bay number, so you are sure to connect the
wiringto the appropriate terminals on the DC PDU at the chassis rear.
Step 2 Verifythat power is off to the DC circuit or circuits on the power supply that you are installing.
Step 3 Ensurethat all site power and grounding requirementshave been met.
Step 4 Removethe plastic cover from the DC terminals by squeezing the flanges at the top and bottom of the cover.
Step 5 Connectthe ground wires to the power supply terminal block, shown as a green wire below. Only one ground
connectionis required, though there may be up to four DC connections.
Step 6 Connectthe DC-input wires to the power supply terminal block. The proper wiring sequence is positive to
positive(red wire), and negative to negative (black wire). The figure below shows a connection to terminal
1.
Cisco UCS 5108 Server Chassis Installation Guide
OL-20035-05 45
Installation
Connecting a DC Power Supply