3-9
Cisco 3700 Series Routers Hardware Installation Guide
OL-2180-08
Chapter 3 Installing the Router
Installing the Chassis Ground Connection
•
For NEC-compliant grounding, use size AWG 14 (2 mm
2
) or larger wire and an appropriate
user-supplied ring terminal.
•
For EN/IEC 60950-compliant grounding, use size AWG 18 (1 mm
2
) or larger wire and an
appropriate user-supplied ring terminal.
For chassis grounding instruction, see one of the following sections:
•
Cisco 3725 Router Ground Connection, page 3-9
•
Cisco 3745 Router Ground Connection, page 3-10
Cisco 3725 Router Ground Connection
To install the ground connection for a Cisco 3725 router, perform the following steps:
Step 1
Strip one end of the ground wire to the length required for the ground lug or terminal.
•
For the NEBS ground lug—approximately 0.75 inch (20 mm)
•
For user-provided ring terminal—as required
Step 2
Crimp the ground wire to the ground lug or ring terminal, using a crimp tool of the appropriate size.
Step 3
Attach the ground lug or ring terminal to the chassis as shown in
Figure 3-12
or
Figure 3-13
. For a
ground lug, use the two screws with captive locking washers provided. For a ring terminal, use one of
the screws provided. Use a number 2 Phillips screwdriver, and tighten the screws to a torque of 8 to
10 in-lb (0.9 to 1.1 N-m).
Step 4
Connect the other end of the ground wire to a grounding point at your site.
Figure 3-12
NEBS-Compliant Ground Wire Connection on a Cisco 3725 Router Chassis
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