Proper Grounding Guidelines - Cisco 2332TQ Hardware Installation Manual

Grounding the System

Proper Grounding Guidelines

Grounding is one of the most important parts of equipment installation. Proper grounding practices
ensure that the buildings and the installed equipment within them have low-impedance connections and
low-voltage differentials between chassis. When you properly ground systems during installation, you
reduce or prevent shock hazards, equipment damage due to transients, and data corruption.
lists some general grounding practice guidelines.
Table 2-3
Environment
Commercial building is
subjected to direct lightning
strikes.
For example, some places in the
United States, such as Florida,
are subject to more lightning
strikes than other areas.
Commercial building is located
in an area where lightning
storms frequently occur but is
not subject to direct lightning
strikes.
Commercial building contains a
mix of information technology
equipment and industrial
equipment, such as welding.
Existing commercial building is
not subject to natural
environmental noise or
man-made industrial noise. This
building contains a standard
office environment. This
installation has a history of
malfunction due to
electromagnetic noise.
Cisco Nexus 2000 Series Hardware Installation Guide
2-8
Proper Grounding Guidelines
Electromagnetic Noise
Severity Level
High
High
Medium to high
Medium
Chapter 2 Installing a Cisco Nexus Fabric Extender
Grounding Recommendations
All lightning protection devices
must be installed in strict
accordance with manufacturer
recommendations. Conductors
carrying lightning current
should be spaced away from
power and data lines in
accordance with applicable
recommendations and codes.
Best grounding
recommendations must be
closely followed.
Grounding recommendations
must be closely followed.
Grounding recommendations
must be closely followed.
Determine source and cause of
noise if possible, and mitigate as
closely as possible at the noise
source or reduce coupling from
the noise source to the affected
equipment. Grounding
recommendations must be
closely followed.
Table 2-3