Cisco IAD2801 Series, Руководство по установке

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4-5
Cisco IAD2801 Series Integrated Access Devices Hardware Installation Guide
OL-12433-01
Chapter 4 Chassis Installation Procedures
Installing the Chassis Ground Connection
Installing the Chassis Ground Connection
Warning
This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the
absence of a suitably installed ground conductor. Contact the appropriate electrical inspection
authority or an electrician if you are uncertain that suitable grounding is available.
Statement 1024
You must connect the chassis to a reliable earth ground; the ground wire must be installed in accordance
with local electrical safety standards.
Note NEBS-compliant grounding is not supported on the Cisco IAD2801.
•
For NEC-compliant grounding, use size 14 AWG (2 mm
2
) or larger copper wire and an appropriate
user-supplied ring terminal with an inner diameter of 1/4 in. (5–7 mm).
•
For EN/IEC 60950-compliant grounding, use size 18 AWG (1 mm
2
) or larger copper wire and an
appropriate user-supplied ring terminal.
To install the ground connection for a Cisco IAD2801, 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 in. (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 4-4 . For a ground lug, use the
two screws with captive locking washers provided. For a ring terminal, use one of the screws provided.
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 known reliable earth ground point at your site.
Figure 4-4 Chassis Ground Connection Using a Ring Terminal on the Cisco IAD2801
After the router has been installed and properly grounded, you can connect the power wiring; the WAN,
LAN, and voice cables; and the cables for administrative access as required for your installation. For
information about connecting the cables, see the “
Cable Connection Procedures ” online document.
117082
Ring terminal
attachment