Chassis Grounding - Cisco WS-C2950-24 Installation Manual

Chapter 3 Installing and Connecting the Router

Chassis Grounding

This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the
Warning
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
Warning During this procedure, wear grounding wrist straps to avoid ESD damage to the card. Do not directly
touch the backplane with your hand or any metal tool, you could shock yourself. Statement 94
You must connect the chassis to a reliable earth ground; the ground wire must be installed in accordance
with local electrical safety standards.
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•
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To install the ground connection for a Cisco 2900 or Cisco 3900 series router, perform the following
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 a crimp tool of the appropriate size.
Step 2
Attach the ground lug or ring terminal to the chassis as shown in
Step 3
Figure
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).
OL-18712-01
For NEBS-compliant grounding, use size 6 AWG (13 mm
in the accessory kit.
NEBS-compliant grounding is not supported on the Cisco 2901 router.
Note
This equipment is suitable for installation in Network Telecommunications Facilities and
Note
locations where the NEC applies. The equipment is suitable for installation as part of the
Common Bonding Network (CBN).
For NEC-compliant grounding, use size 14 AWG (2 mm
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
appropriate user-supplied ring terminal.
For the NEBS ground lug—approximately 0.75 inch (20 mm)
For user-provided ring terminal—as required
3-18, or Figure 3-19. For a ground lug, use the two screws with captive locking washers provided.
2
) copper wire and the ground lug provided
2
) or larger copper wire and an appropriate
2
) or larger copper wire and an
Figure 3-16,
Cisco 2900 and 3900 Series Hardware Installation
Chassis Grounding
Figure 3-17, Figure 3-18,
3-15