• There must be an earth ground connection to the chassis that you are installing the replacement module.
Typically, the chassis is grounded by its metal-to-metal connection to a grounded rack. If you need to
ground this chassis by another means, see Grounding the Chassis, on page 21.
• We recommend 8-AWG wire for DC installation in the U.S.
• All DC power supplies have reverse polarity protection. When you inadvertently connect the input power
(+) to the DC PSU’s – terminal and the input power – to the DC PSU’s (+) terminal, the PSU will not
be damaged and will operate fine after the input power feeds are correctly wired.
Step 1 Holding the replacement power supply with one hand underneath the module and the other hand holding the handle, turn
the power supply so that its release latch is on the side and align the back end of the power supply (the end with the
electrical connections) to the open power supply slot before carefully sliding the power supply all the way into the slot
until it clicks into place.
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.
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.
Cisco Nexus 9332D-GX2B ACI-Mode Switch Hardware Installation Guide
39
Replacing Components
Installing a DC Power Supply
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