Cisco Nexus 9372TX Hardware Installation Manual page 43

Replacing Components
Statement 342—Before Connecting to System Power Supply
Warning
High leakage current earth connection essential before connecting to system power supply.
Statement 1024—Ground Conductor
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.
Before You Begin
You must turn off the circuit breaker for the DC power cables that you are connecting to prevent electrocution.
Step 1
Verify that the circuit breaker for the power feed to the replacement power supply is turned off.
Step 2 Remove the DC power connector block from the power supply by doing the following:
a) Push the orange plastic button on the top of the connector block inward toward the power supply.
b) Pull the connector block out of the power supply.
Step 3 Strip 0.6 inches (15 mm) of insulation off the DC wires that you are using.
Step 4 Orient the connector as shown in the following figure with the orange plastic button on top.
1 Wire retainer lever
2 Orange plastic button on top of the connector
3 -48V Return (+DC) cable
4
5
Cisco Nexus 9372TX and 9372TX-E NX-OS Mode Switches Hardware Installation Guide
Wiring a 48 V DC Electrical Connector Block
-48V (-DC) cable
Grounding cable (8 AWG recommended)
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