Avoid UPS types that use ferroresonant technology. These UPS types can become
unstable with the switch, which can have substantial current draw fluctuations
because of fluctuating data traffic patterns.
Caution
• Ensure that circuits are sized according to local and national codes. Typically, this often requires one or
both of the following:
• AC power supplies typically require at least a 15-A or 20-A AC circuit, 100 to 240 VAC, and a
frequency of 50 to 60 Hz.
• HVAC/HVDC power supplies require the following:
• HVAC input voltage range of 100 to 277 VAC with a frequency of 50 to 60 Hz
• HVDC input voltage range of -240 to -380 VDC
To prevent loss of input power, ensure the total maximum loads on the circuits
supplying power to the switch are within the current ratings for the wiring and
breakers.
Caution
For AC input application, please refer to the statement below:
Note
Statement 1005—Circuit Breaker
This product relies on the building's installation for short-circuit (overcurrent)
protection. Ensure that the protective devices is rated not greater than 20A (North
America), 16A (Europe), and 13A (UK).
Warning
For DC input application, please refer to the statement below:
Note
Statement 1005—Circuit Breaker
This product relies on the building's installation for short-circuit (overcurrent)
protection. Ensure that the protective devices is rated not greater than 40A for
the regular DC power supplies (rated 48-60VDC) and 10A for the HVDC power
supplies.
Warning
Cisco Nexus 9336C-FX2 NX-OS Mode Switch Hardware Installation Guide
13
Installing the Switch Chassis
Installation Guidelines
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