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Specify Grounding Requirements
Grounding systems
HP rp7400 servers require two methods of grounding:
• Power distribution safety grounding
• High frequency intercabinet grounding
NOTE Some of the grounding requirements described here may
differ outside of North America.
Power distribution safety grounding
The power distribution safety grounding system consists of connecting
various points in the power distribution system to earth ground using
green (green/yellow) wire ground conductors. Having these ground
connections tied to metal chassis parts that may be touched by computer
room personnel protects them against shock hazard from current leakage
and fault conditions.
Power distribution systems consist of several parts. Hewlett-Packard
recommends that these parts be solidly interconnected to provide an
equal-potential ground to all points.
Main building electrical ground The main electrical service
entrance equipment should have an earth ground connection, as
required by applicable codes. Connections such as a grounding rod,
building steel, or a conductive type cold water service pipe provide an
earth ground.
Electrical conduit ground All electrical conduits should be made of
rigid metallic conduit, Flex-T conduit, or liquid-tight conduit that is
securely connected together or bonded to panels and electrical boxes, so
as to provide a continuous grounding system.
Power panel ground Each power panel should be grounded to the
electrical service entrance with green (green/yellow) wire ground
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