Overview
This topic explains how to prepare power requirements for the Cisco N9164E-NS4-O switch.
The switch includes two power supplies (1-to-1 redundancy with current sharing) in this combination:
PSU-1 and PSU-2 are both 3 kW dual AC power supplies (PSU3KW-HVPI) in a 1+1 redundancy.
For 1+1 redundancy, you must use two power sources and connect each power supply to a separate power source.
The power supplies are rated to output up to 3,000 W (AC power supplies).
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.
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.
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 20 A (North America), 16 A (Europe), and 13 A (UK).