Cisco Nexus 9336PQ, Hardware Installation Manual

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If the power supply does not fit into the open slot, turn the module over before carefully sliding it into the open
slot. Note
Step 2 If the DC power cables and a grounding cable are already connected to an electrical connector block, insert the block
into the power receptacle on the power supply.
If the electrical cables have not been connected to the electrical connector block, wire them as described in Wiring a 48
V DC Electrical Connector Block, on page 41 .
Step 3 Turn on the circuit breaker for the DC power source connected to the power supply.
Step 4 Verify that the power supply is operational by making sure that the power supply LED is green. For information on
what the power supply LEDs indicate, see Power Supply LEDs, on page 56 .
Wiring a 48 V DC Electrical Connector Block
You must connect the ground, negative, and positive DC power cables to a connector block in order to connect
the power cables to a 48 V DC power supply.
The recommended wire gauge is 8 AWG. The minimum wire gauge is 10 AWG. Note
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Statement 342—
Before Connecting to System Power Supply
High touch/leakage current – Permanently connected protective earth ground is essential before connecting
to system power supply.
Warning
Statement 1024— Ground Conductor
This equipment must be grounded. To reduce the risk of electric shock, 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.
Warning
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.
Cisco Nexus 9336PQ ACI-Mode Switch Hardware Installation Guide
41
Replacing Modules
Wiring a 48 V DC Electrical Connector Block