information) that now has a connection to the data center earth ground, you can ground the chassis by connecting
its grounding pad to the rack. Otherwise, you must connect the chassis grounding pad directly to the data
center ground.
To connect the switch chassis to the data center ground, you need the following tools and materials:
• Grounding lug—A two-holed standard barrel lug that supports up to 6 AWG wire. This lug is supplied
with the accessory kit.
• Grounding screws—Two M4 x 8 mm (metric) pan-head screws. These screws are shipped with the
accessory kit.
• Grounding wire—Not supplied with the accessory kit. This wire should be sized to meet local and national
installation requirements. Depending on the power supply and system, a 12 AWG to 6 AWG copper
conductor is required for U.S. installations. We recommend that you use commercially available 6 AWG
wire. The length of the grounding wire depends on the proximity of the switch to proper grounding
facilities.
• Number 1 manual Phillips-head torque screwdriver.
• Crimping tool to crimp the grounding wire to the grounding lug.
• Wire-stripping tool to remove the insulation from the grounding wire.
Step 1 Use a wire-stripping tool to remove approximately 0.75 inch (19 mm) of the covering from the end of the grounding
wire.
Step 2 Insert the stripped end of the grounding wire into the open end of the grounding lug as shown in the following figure.
Figure 12: Inserting a Grounding Wire in a Grounding Lug
Grounding cable with 0.75 in. (19 mm) of insulation
stripped from one end
2NRTL listed 45-degree grounding lug1
Step 3 Use the crimping tool to crimp the lug to the grounding wire. Verify that the ground wire is securely attached to the
grounding lug by attempting to pull the wire out of the crimped lug.
Step 4 Secure the grounding wire lug to the grounding pad with two M4 screws, and tighten the screws to 11.5 to 15 in-lb (1.3
to 1.7 N·m) of torque.
The following figure shows the location of the grounding pad on the front of the chassis. There is another grounding pad
on the other side of the chassis.
Cisco Nexus 7706 Hardware Installation Guide
OL-31330-0132
Installing the Switch Chassis
Grounding a Switch Chassis
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