Cisco Nexus 7706 Hardware Installation Manual page 40

Grounding a Switch Chassis
Before You Begin
Before you can ground the chassis, you must have a connection to the earth ground for the data center building.
If you installed the switch chassis into a bonded rack (see the rack manufacturer's instructions for more
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
• Grounding screws—Two M4 x 8 mm (metric) pan-head screws. These screws are shipped with the
• Grounding wire—Not supplied with the accessory kit. This wire should be sized to meet local and
• 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
1 NRTL listed 45-degree grounding lug
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.
Cisco Nexus 7706 Hardware Installation Guide
30
with the accessory kit.
accessory kit.
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.
2 Grounding cable with 0.75 in. (19 mm) of insulation stripped
from one end
Installing the Switch Chassis
OL-31330-01