Cisco Systems 3700 Series manual Cisco 3725 Router Ground Connection

Chapter 3 Installing the Router

Installing the Chassis Ground Connection

•For NEC-compliant grounding, use size AWG 14 (2 mm2) or larger wire and an appropriate user-supplied ring terminal.

•For EN/IEC 60950-compliant grounding, use size AWG 18 (1 mm2) 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 3-12or 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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Ground lug

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DSU 56K

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DSU 56K

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Cisco 3700 Series Routers Hardware Installation Guide

OL-2180-08 3-9