Proper Grounding Practices - Cisco UCS 6400 Series Hardware Installation Manual

Proper Grounding Practices

Proper Grounding Practices
Grounding is one of the most important parts of equipment installation. When you properly ground systems
during installation, you reduce or prevent shock hazards, equipment damage due to transients, and data
corruption.
Note In all situations, grounding practices must comply with local National Electric Code (NEC) requirements or
local laws and regulations.
Table 3: Proper Grounding Guidelines
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 are 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 UCS 6400 Series Fabric Interconnect Hardware Installation Guide
22
Electromagnetic Noise Severity
Level
High
High
Medium to high
Medium
Installing the Cisco UCS Fabric Interconnect
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.
Best grounding recommendations
must be closely followed.
Best 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. Best grounding
recommendations must be closely
followed.