IBM RackSwitch G8000, Installation Manual

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CAUTION:
The product may be equipped with a hard-wired power cable. Ensure that a
licensed electrician performs the installation per national electrical code.
(C022)
CAUTION:
Ensure that the building power circuit breakers are turned off BEFORE you
connect the power cord or cords to the building power. (C023)
CAUTION:
To reduce the risk of electrical shock or energy hazards:
v
This equipment must be installed by trained service personnel in a
restricted access location, as defined by NEC and IEC 60950, The Standard
for Safety of Information Technology Equipment.
v
Connect the equipment to a reliably grounded, safety extra low voltage
(SELV) source. A 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 volts DC).
v The branch circuit overcurrent protection must be rated per the following
table.
v
Use copper wire conductor only, not exceeding 3 m (9.8 ft.) in length and
sized according to the following table.
v
Torque the wiring-terminal screws to the values in the following table.
v Incorporate a readily available approved and rated disconnect device in the
field wiring.
(C033)
Table 3. Power specifications
Power Specification
Circuit breaker rating Minimum and maximum: 20 amps
Wire size
v
16 AWG (IBM part number 90Y3538 DC
power cable from PDP output to server
input)
v
1.31 mm2
Wiring terminal screw torque
v inch pounds (IBM part number, 90Y3538,
provided with connector, both ends)
v
newton meters (Nm)
Each power supply can be connected to a separate DC power source to mitigate
the risk of down time during a power failure. When used in a redundant
configuration, the dual power supplies have a load-sharing capability that allows
each supply to operate at approximately 50 percent of full load. Using redundant
Chapter 1. Introduction
7