Cisco Nexus 93360YC-FX2 Hardware Installation Manual page 18

Planning for Power Requirements
• Two 930-W DC power supplies
Note For n+1 redundancy, you can use one or two power sources for the two power supplies. For n+n 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 1200 W (AC and HVAC/HVDC power supplies) to the switch,
but the switch requires less than that amount of power from the power supply. To operate the switch, you
must provision enough power from the power source to cover the requirements of both the switch and a power
supply. Typically, this switch and a power supply require about 429 W of power input from the power source,
but you must provision as much as 1245 W power input from the power source to cover peak demand.
Note 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, make sure that each power-source circuit that is used by the
switch is dedicated to the switch.
Note For AC input application, please refer to the following statement:
Warning Statement 1005 Circuit Breaker
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).
Note For DC input application, please refer to the following statement:
Warning Statement 1005 Circuit Breaker
This product relies on the building's installation for short-circuit (overcurrent) protection.
• Ensure that the protective devices are rated not greater than 30A when the switch is powered with regular
DC power supplies (rated 48-60VDC).
• Ensure that the protective devices are rated not greater than 10A when the switch is powered with HVDC
power supplies (rated 240-350VDC).
Cisco Nexus 93360YC-FX2 NX-OS Mode Switch Hardware Installation Guide
10
Preparing the Site