2-7
Cisco ME 6500 Series Ethernet Switch Installation Guide
OL-8900-03
Chapter 2 Preparing for Installation
Site Requirements
Note
In all situations, grounding practices must comply with local National Electric Code (NEC)
requirements or local laws and regulations.
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage, which can occur when FRUs are improperly handled, results in
intermittent or complete failures.
To prevent ESD damage, follow these guidelines:
•
Always use an ESD wrist strap and ensure that it makes maximum contact with bare skin. ESD
grounding straps are available with banana plugs, metal spring clips, or alligator clips. All
Cisco ME 6524 Ethernet switch chassis are equipped with an ESD connector (identified by the
ground symbol next to the connector) on the front panel.
•
If you choose to use an ESD wrist strap equipped with an alligator clip, you must attach the system
ground lug to the chassis to provide a proper grounding point for the ESD wrist strap.
Note
This system ground is also referred to as the network equipment building system (NEBS)
ground.
•
If your chassis does not have the system ground attached, you must install the system ground lug.
Note
You do not need to attach a supplemental system ground wire to the system ground lug; the lug
provides a direct path to the bare metal of the chassis.
A new commercial building is
not subject to natural
environmental noise or
man-made industrial noise. This
building contains a standard
office environment.
Low
Best grounding practices should be followed
as closely as possible; consult with the site or
local electrician. Electromagnetic noise
problems are not anticipated, but installing a
best practice grounding system in a new
building is often the least expensive route
and the best way to plan for the future.
An existing commercial building
is not subject to natural
environmental noise or
man-made industrial noise. This
building contains a standard
office environment.
Low
Best grounding practices should be followed
as much as possible; consult with the site or
local electrician. Electromagnetic noise
problems are not anticipated, but installing a
best practice grounding system is always
recommended.
Table 2-1
Grounding Practice Guidelines (continued)
Environment
Electromagnetic
Noise Severity Level Grounding Recommendations
