HP 50 Modular Smart Array - Manual (Page 19)

Setup 19
Electrical grounding requirements
The storage enclosure 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.
Furthermore, 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 storage
enclosure 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
storage enclosure is not recommended.
Rack warnings
WARNING: To reduce the risk of personal injury or damage to
the equipment, be sure that:
• The leveling jacks are extended to the floor.
• The full weight of the rack rests on the leveling jacks.
• The stabilizing feet are attached to the rack if it is a single-rack
installation.
• The racks are coupled together in multiple-rack installations.
• Only one component is extended at a time. A rack may become
unstable if more than one component is extended for any
reason.
WARNING: To reduce the risk of personal injury or equipment
damage when unloading a rack: