Cisco Nexus 9364E-SG2 Hardware Installation Manual page 14

Grounding Requirements
Grounding Requirements
The switch is sensitive to variations in voltage that is supplied by the power sources. Overvoltage, undervoltage,
and transients (spikes) can erase data from memory or cause components to fail. To protect against these types
of problems, ensure that there is an earth-ground connection for the switch. Connect the grounding pad on
the switch either directly to the earth-ground connection or to a fully bonded and grounded rack.
When the chassis is properly installed in a grounded rack, the switch is grounded because it has a metal-to-metal
(no paint, stain, dirt, or anything else on it) connection to the rack. Alternatively, ground the chassis by using
a customer-supplied grounding cable that meets your local and national installation requirements. For U.S.
installations, we recommend 6-AWG wire. Connect your grounding cable to the chassis with a grounding lug
(provided in the switch accessory kit) and to the facility ground.
Note
Planning for Power Requirements
The switch includes two power supplies (1-to-1 redundancy with current sharing) in this combination:
PSU-1 and PSU-2 are both 3KW dual AC power supplies (PSU3KW-HVPI) in a 1+1 redundancy.
Note
The power supplies are rated to output up to 3000 W (AC power supplies).
Note
To minimize the possibility of circuit failure, verify that each power-source circuit that is used by the switch
is dedicated to the switch.
This Warning applies to AC input application.
Warning
Cisco Nexus 9364E-SG2 (N9364E-SG2-Q) NX-OS-Mode Switch Hardware Installation Guide
8
Create an electrical conducting path between the product chassis and the metal surface of the enclosure, or
rack in which it is mounted, or to a grounding conductor. Provide electrical continuity by using thread-forming
type mounting screws that remove any paint or non-conductive coatings and establish a metal-to-metal contact.
Remove any paint or other non-conductive coatings on the surfaces between the mounting hardware and the
enclosure or rack. Clean the surfaces and apply an antioxidant before installation.
For 1+1 redundancy, you must use two power sources and connect each power supply to a separate power
source.
Some of the power supply modules have rating capabilities that exceed the switch requirements. When
calculating your power requirements, use the switch requirements to determine the amount of power that is
required for the power supplies.
Statement 1005 Circuit Breaker when using AC power supplies
This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that the
protective devices are rated not greater than 20A (North America), 16A (Europe), and 13A (UK).
Preparing the Site