System Ground Connection Guidelines
Cisco 12008 Gigabit Switch Router Installation and Configuration Guide
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System Ground Connection Guidelines
Before connecting power to or turning on the Cisco12 008, be sure to provide an adequate
ground connection for your system.
Two system (earth) grounding holes are provided on each side panel of the router enclosure,
approximately 3 inches from the bottom rear of the panel (Figure2-7).
To make an adequate grounding connection, you will need the following parts:
•Two grounding lugs—The grounding lugs must have two M6 screw holes that have
0.625 to 0.75 inch (15.86 to 19.05 mm) spacing between them.
These lugs are similar to those used for the DC-input power supply (see Figure2-6). The
grounding lugs are not available from Cisco Systems; any electrical-connector vendor,
such as Panduit, can readily provide this lug.
•Four M6 (metric) hex-head screws with locking washers—These screws are not
available from Cisco Systems; they are readily available from any commercial hardware
vendor.
•Two grounding wires (4 AWG recommended)—The length of the grounding wires
depends on the location of your router within the site and its proximity to proper
grounding facilities. The grounding wire is not available from Cisco Systems; it is
readily available from any commercial cable vendor.
The procedure for connecting system ground to your router is presented in Chapter3 in the
section entitled “Connecting System Ground.”