Installing The Router Ground Connection - Cisco 881W - Integrated Services Router Wireless Hardware Installation Manual

Installing the Router
To prevent bodily injury when mounting or servicing this unit in a rack, you must take special
Warning
precautions to ensure that the system remains stable. The following guidelines are provided to ensure
your safety:
--
This unit should be mounted at the bottom of the rack if it is the only unit in the rack.
--
When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest
component at the bottom of the rack.
--
If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in the
rack.
Caution Chassis installation must allow unrestricted airflow for chassis cooling.
Step 3 Using two screws for each side (supplied with the rack), attach the Cisco 890 series ISR with rack-mount
brackets to a 19-inch rack. Start with the lower pair of screws first, resting the brackets on the lower
screws while you insert the upper pair of screws.
Note
Tip
Step 4 Place the power adapter on a nearby horizontal surface.
Step 5 Connect the chassis to a reliable earth ground. For the chassis ground connection procedures, see the
"Installing the Router Ground Connection" section on page

Installing the Router Ground Connection

The router must be connected to a reliable earth ground. Install the ground wire in accordance with local
electrical safety standards.
•
•
To install the ground connection, follow these steps:
Strip one end of the ground wire to the length required for the ground lug or terminal.
Step 1
Crimp the ground wire to the ground lug or ring terminal, using the wire crimper.
Step 2
Attach the ground lug or ring terminal to the chassis as shown in
Step 3
two provided screws with captive locking washers. 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).
Cisco 860 Series, Cisco 880 Series, and Cisco 890 Series Integrated Services Routers Hardware Installation Guide
2-10
Statement 1006
Be sure to leave space above and below each unit in a rack to allow for cooling air circulation.
The screw slots in the brackets are spaced to line up with every second pair of screw holes in the
rack. When the correct screw holes are used, the small threaded holes in the brackets line up with
unused screw holes in the rack. If the small holes do not line up with the rack holes, you must
raise or lower the brackets to the next rack hole.
For NEC-compliant grounding, use size 14 AWG (2 mm
with an inner diameter of 1/4 in. (5 to 7 mm).
For EN/IEC 60950–compliant grounding, use size 18 AWG (1 mm
Chapter 2 Installing the Router
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2
) or larger copper wire and a ring terminal
2
) or larger copper wire.
Figure 2-8. For a ground lug, use the
OL-16193-03