Specifications 115
the NEC and IEC 60950-1, Second Edition, the standard for Safety of
Information Technology Equipment.
• Connect the equipment to a reliably grounded safety extra low voltage (SELV)
source. An SELV source is a secondary circuit that is designed so normal and
single fault conditions do not cause the voltages to exceed a safe level (60 V
direct current).
• The branch circuit overcurrent protection must be rated 20A.
Hot-plug power supply calculations
For hot-plug power supply specifications and calculators to determine electrical and heat loading for the
server, refer to the HP Enterprise Configurator website (http://h30099.www3.hp.com/configurator/
).
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