Cisco 7206VXR Installation Guide - Page 80

Providing a Chassis Ground Connection for the Router Chassis

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Providing a Chassis Ground Connection for the Router Chassis Chapter 3 Installing the Cisco 7206 Providing a Chassis Ground Connection for the Router Chassis Before you connect power or turn on power to your router, we strongly recommend that you provide an adequate chassis ground (earth) connection for your router's chassis. Chassis grounding receptacles are provided on each Cisco 7206 router chassis. (Refer to Figure 3-11.) Note Older Cisco 7206 router chassis do not have the grounding receptacles. If you have a Cisco 7206 chassis that does not have the grounding receptacles and you want to make appropriate ground connections to your router, you must order a Cisco 7206 router chassis that has the grounding receptacles. To ensure the chassis grounding connection that you provide is adequate, you will need the following parts and tools: • One grounding lug-Must have two number-10 screw holes that have a 0.63-inch (16.002-mm) spacing between them, and a wire receptacle large enough to accept a 6-AWG multistrand, copper wire. (See Figure 3-12.) This grounding lug is not available from Cisco Systems; electrical-connector vendors provide this type of grounding lug. • Two Phillips-head machine screws with locking washers-M5 (metric), 0.031-inch (0.8-mm) pitch, 0.315-inch (8-mm) length. These screws are not available from Cisco Systems; they are available from any commercial hardware vendor. • One grounding wire-6-AWG, 0.162-inch (4.115-mm) diameter, with approximately 0.108-inch (2.743-mm) insulation, for a total wire diameter of approximately 0.27 inches (6.858 mm). The wire length is dependent on your router location and site environment. This wire is not available from Cisco Systems; it is available from any commercial cable vendor. • Number 2 Phillips screwdriver • Crimping tool large enough to accommodate the diameter of the wire receptacle on your grounding lug • Wire stripper Figure 3-11 Locating the Chassis Grounding Receptacles Chassis grounding receptacles Power supply filler plate AC-input receptacle Internal fans H6423 NETWORK PROCESSING ENGINE-150 Network processing engine AC-input or network services engine power supply Power switch 3-12 Cisco 7206 Installation and Configuration Guide OL-5102-02

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3-12
Cisco 7206 Installation and Configuration Guide
OL-5102-02
Chapter 3
Installing the Cisco 7206
Providing a Chassis Ground Connection for the Router Chassis
Providing a Chassis Ground Connection for the Router Chassis
Before you connect power or turn on power to your router, we strongly recommend that you provide an
adequate chassis ground (earth) connection for your router’s chassis. Chassis grounding receptacles are
provided on each Cisco 7206 router chassis. (Refer to
Figure 3-11
.)
Note
Older Cisco 7206 router chassis do not have the grounding receptacles. If you have a Cisco 7206 chassis
that does not have the grounding receptacles and you want to make appropriate ground connections to
your router, you must order a Cisco 7206 router chassis that has the grounding receptacles.
To ensure the chassis grounding connection that you provide is adequate, you will need the following
parts and tools:
•
One grounding lug—Must have two number-10 screw holes that have a 0.63-inch (16.002-mm)
spacing between them, and a wire receptacle large enough to accept a 6-AWG multistrand, copper
wire. (See
Figure 3-12
.) This grounding lug is not available from Cisco Systems;
electrical-connector vendors provide this type of grounding lug.
•
Two Phillips-head machine screws with locking washers—M5 (metric), 0.031-inch (0.8-mm) pitch,
0.315-inch (8-mm) length. These screws are not available from Cisco Systems; they are available
from any commercial hardware vendor.
•
One grounding wire—6-AWG, 0.162-inch (4.115-mm) diameter, with approximately 0.108-inch
(2.743-mm) insulation, for a total wire diameter of approximately 0.27
inches (6.858 mm). The wire
length is dependent on your router location and site environment. This wire is not available from
Cisco Systems; it is available from any commercial cable vendor.
•
Number 2 Phillips screwdriver
•
Crimping tool large enough to accommodate the diameter of the wire receptacle on your grounding
lug
•
Wire stripper
Figure 3-11
Locating the Chassis Grounding Receptacles
H6423
NETWORK PROCESSING ENGINE-150
Internal fans
Network processing engine
or network services engine
AC-input
power supply
AC-input
receptacle
Power supply
filler plate
Chassis
grounding
receptacles
Power switch