Electrical Grounding Requirements - HP ML330 - ProLiant - G3 Setup And Installation Manual

When installing more than one server, you may need to use additional power
distribution devices to safely provide power to all devices. Observe the following
guidelines:
•
Balance the server power load between available AC supply branch circuits.
•
Do not allow the overall system AC current load to exceed 80 percent of the
branch circuit AC current rating.
•
Do not use common power outlet strips for this equipment.
•
Provide a separate electrical circuit for the server.

Electrical Grounding Requirements

The server must be grounded properly for proper operation and safety. 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, you must install the equipment in accordance with Canadian
Standards Association, CSA C22.1, Canadian Electrical Code. In all other countries,
you must install the equipment in accordance with any regional or national electrical
wiring codes, such as the International Electrotechnical Commission (IEC) Code 364,
parts 1 through 7. Further more, you must be sure 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 nondetachable 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. Using common power outlet strips for the server is not recommended.
HP ProLiant ML330 Generation 3 Server Setup and Installation Guide
Server Setup
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