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3-4
Cisco Nexus 2000 Series Hardware Installation Guide
OL-19013-05
Chapter 3 Installing a Cisco Nexus 2000 Series Fabric Extender
Preparing for Installation
Caution Avoid UPS types that use ferroresonant technology. These UPS types can become unstable
with systems such as the Cisco Nexus 2000 Series FEX, which can have substantial current
draw fluctuations because of fluctuating data traffic patterns.
• Ensure that circuits are sized according to local and national codes. For North America, the power
supply requires a 15-A or 20-A circuit.
Caution To prevent loss of input power, ensure the total maximum loads on the circuits supplying
power to the device are within the current ratings for the wiring and breakers.
• Use the following screw torques when installing the device:
–
Captive screws: 4 in-lb
–
M3 screws: 4 in-lb
–
M4 screws: 12 in-lb
–
10-32 screws: 20 in-lb
–
12-24 screws: 30 in-lb
Required Tools and Equipment
Before beginning the installation, ensure that the following items are ready:
• Number 1 and number 2 Phillips screwdrivers with torque capability
• 3/16-inches flat-blade screwdriver
• Tape measure and level
• ESD wrist strap or other grounding device
• Antistatic mat or antistatic foam
The following additional items (not found in the accessory kit) are required to ground the chassis:
• Grounding cable (6 AWG recommended), sized according to local and national installation
requirements; the required length depends on the proximity of the Cisco Nexus 2000 Series FEX to
proper grounding facilities
• Crimping tool large enough to accommodate girth of lug
• Wire-stripping tool
Unpacking and Inspecting the Cisco Nexus 2000 Series Fabric Extender
Caution When handling device components, wear an ESD wrist strap and handle modules by the carrier edges
only. An ESD socket is provided on the chassis. For the ESD socket to be effective, the chassis must be
grounded through the power cable, the chassis ground, or the metal-to-metal contact with a grounded
rack.