Grounding Requirements; Rack Warnings And Cautions - HP PtoLiant DL140 Setup And Installation Manual

The installation of this equipment shall be in accordance with local/regional electrical regulations
governing the installation of information technology equipment by licensed electricians. This
equipment is designed to operate in installations covered by NFPA 70, 1999 Edition (National
Electric Code) and NFPA 75, 1992 Edition (code for Protection of Electronic Computer/Data
Processing Equipment). For electrical power ratings on options, refer to the product's rating label
or the user documentation supplied with that option.
When installing more than one server, additional power distribution devices may be required to
safely provide power to all devices. Observe the following guidelines:
•
The power load must be balanced between available AC supply branch circuits.
•
The overall system AC current load must not exceed 80 percent of the branch circuit AC
current rating.

Grounding Requirements

For proper operation and safety, the server must be properly grounded. In the United States, you
must install the equipment in accordance with NFPA 70, 1999 Edition (National Electric Code)
Article 250, as well as any local and regional building codes. In Canada, the equipment must be
installed in accordance with Canadian Standards Association, CSA C22.1, Canadian Electrical
Code. In all other countries, the installation must follow any regional or national electrical wiring
codes, such as the International Electrotechnical Commission (IEC) 364, parts 1 through 7.
Furthermore, you must ensure that all power distribution devices used in the installation—such as
branch wiring and receptacles—are listed or certified grounding-type devices.
Because of the high ground leakage currents associated with multiple servers connected to the
same power source, HP recommends the use of a power distribution unit (PDU) that is either
permanently wired to the building's branch circuit or includes a non-detachable cord that is wired
to an industrial-style plug. NEMA locking-style plugs or those complying with IEC 60309 are
considered suitable for this purpose. HP does not recommend using common power outlet strips
for this equipment.

Rack Warnings and Cautions

Before installing a rack, carefully review the following warnings and cautions:
WARNING: To reduce the risk of personal injury or equipment damage, always
ensure that the rack is adequately stabilized before extending a component out
of the rack. Extend only one component at a time. A rack may become unstable
if more than one component is extended for any reason.
HP ProLiant DL140 Server Setup and Installation Guide
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