Dc Supply And Ground Conductor Requirements - Fujitsu Sparc Enterprise T5120 Installation Manual

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"DC Supply and Ground Conductor Requirements" on page 86
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DC Supply and Ground Conductor
Requirements
The server must meet the following:
Suitable conductor material: use copper conductors only
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Power supply connections through the input connector: 12 AWG (between the
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server and the source). There are three conductors:
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System ground conductor: 12 AWG (to be connected to the chassis)
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Cable insulation rating: Minimum of 75˚C (167˚F), low smoke fume (LSF), flame
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retardant
Provide a Wago Type 721-103/037-000 mating connector for proper connection to
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the DC connectors supplied with the server (Wago Type 721).
Branch circuit cable insulation color: Per applicable National Electrical Codes
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Grounding cable insulation color: Green/Yellow
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DC power source must meet TNV-2 requirements as defined by UL 60950-1 and
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IEC 60950-1
Note – Depending on the DC power source, the -48V or -60V (negative terminal)
might be marked with a minus (-) symbol, and the -48V or -60V Return (positive
terminal) might be marked with a positive (+) symbol.
When attaching DC cables, keep the following requirement in mind:
Caution – You must restrict the connection of the server to the DC power source to
minimize the possibility that transient energy will appear on the main input to the
equipment. The DC battery power source must be in the same premises as the server.
The server cannot be in one building with the power source in another building.
86 SPARC Enterprise T5120 and T5220 Servers Installation Guide • July 2009
-48V or -60V (negative terminal)
Chassis ground connection
-48V or -60V Return (positive terminal)