3-8
Catalyst 4500 E-Series Switches Installation Guide
OL-13972-02
Chapter 3 Installing the Switch
Establishing the System Ground Connection
Required Tools and Parts
To connect the system ground, you need the following tools and parts:
•
Grounding lug—A two-hole standard barrel lug that supports up to 6 AWG wire. The grounding lug
is upplied as part of accessory kit.
•
Grounding screws—Two M4 x 8 mm (metric) pan-head screws that are supplied as part of the
accessory kit.
•
Grounding wire—Not supplied as part of the accessory kit. The grounding wire should be sized
according to local and national installation requirements. Depending on the power supply and
system, a 12 AWG to 6 AWG copper conductor is required for U.S. installations. Commercially
available 6 AWG wire is recommended. The length of the grounding wire depends on the proximity
of the switch to proper grounding facilities.
•
No. 1 Phillips-head screwdriver.
•
Crimping tool to crimp the grounding wire to the grounding lug.
•
Wire-stripping tool to remove the insulation from the grounding wire.
Connecting System Ground
Caution
Installations that rely solely on system grounding using only an AC third-prong ground run a
substantially greater risk of equipment problems and data corruption than those installations that use
both the AC third-prong ground and a properly installed system (NEBS compliant) ground.
To attach the grounding lug and cable to the grounding pad, follow these steps:
Step 1
Use a wire-stripping tool to remove approximately 0.75 inch (19 mm) of the covering from the end of
the grounding wire.
Step 2
Insert the stripped end of the grounding wire into the open end of the grounding lug.
Step 3
Crimp the grounding wire in the barrel of the grounding lug. Verify that the ground wire is securely
attached to the ground lug by holding the ground lug and gently pulling on the ground wire.
Step 4
Locate and remove the adhesive label covering the system grounding pad on the switch chassis. (See
Figure 3-3
.)
Note
All Catalyst 4500 E-series chassis have the system ground pad in the same location.
