Cisco Catalyst 9400 Series Hardware Installation Manual page 44

Power Connection Guidelines for DC-Powered Systems
Warning
The covers are an integral part of the safety design of the product. Do not operate the unit without the covers
installed. Statement 1077
Warning
This unit might have more than one power supply connection. All connections must be removed to de-energize
the unit. Statement 1028
Warning When stranded wiring is required, use approved wiring terminations, such as closed-loop or spade-type with
upturned lugs. These terminations should be the appropriate size for the wires and should clamp both the
insulation and conductor. Statement 1002
Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Statement 1003
Warning
Hazardous voltage or energy may be present on DC power terminals. Always replace cover when terminals
are not in service. Be sure uninsulated conductors are not accessible when cover is in place. Statement 1075
Warning When installing or replacing the unit, the ground connection must always be made first and disconnected last.
Statement 1046
Warning A readily accessible two-poled disconnect device must be incorporated in the fixed wiring. Statement 1022
Warning This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the absence
of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician
if you are uncertain that suitable grounding is available. Statement 1024
Warning Use copper conductors only. Statement 1025
Warning Connect the unit only to DC power source that complies with the Safety Extra-Low Voltage (SELV)
requirements in IEC 60950 based safety standards. Statement 1033
Cisco Catalyst 9400 Series Switches Hardware Installation Guide
38
Preparing for Installation