IBM DS3500 Installation, User's, And Maintenance Manual page 18

CAUTION:
To reduce the risk of electric shock or energy hazards:
v This equipment must be installed by trained service personnel in a restricted-access location, as
defined by the NEC and IEC 60950-1, First Edition, The Standard for Safety of Information
Technology Equipment.
v Connect the equipment to a reliably grounded safety extra low voltage (SELV) source. An SELV
source is a secondary circuit that is designed so that normal and single fault conditions do not cause
the voltages to exceed a safe level (60 V direct current).
v Incorporate a readily available approved and rated disconnect device in the field wiring.
v See the specifications in the product documentation for the required circuit-breaker rating for
branch circuit overcurrent protection.
v Use copper wire conductors only. See the specifications in the product documentation for the
required wire size.
v See the specifications in the product documentation for the required torque values for the
wiring-terminal nuts.
Statement 37
DANGER
When you populate a rack cabinet, adhere to the following guidelines:
v Always lower the leveling pads on the rack cabinet.
v Always install the stabilizer brackets on the rack cabinet.
v Always install the heaviest devices in the bottom of the rack cabinet.
v Do not extend multiple devices from the rack cabinet simultaneously, unless the rack-mounting
instructions direct you to do so. Multiple devices extended into the service position can cause
your rack cabinet to tip.
v If you are not using the IBM 9308 rack cabinet, securely anchor the rack cabinet to ensure its
stability.
Attention: This product is suitable for use on an IT power distribution system whose maximum phase
to phase voltage is 240 V under any distribution fault condition.
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System Storage DS3500 and EXP3500: Installation, User's, and Maintenance Guide