The server power source and connections must meet the following requirements.
Caution - The DC power source must be reliably grounded. The server chassis must be grounded with the power supply ground pins or with the chassis ground studs. It is acceptable to have both grounds connected. |
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 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. |
Caution - An accessible two-pole disconnect device must incorporated in the fixed wiring. |
Caution - When connecting the ground wire to the power supplies, a small service loop must be kept in the ground wire to ensure that if there is strain on the supply wires, the ground wire will be the last to receive that strain. |
Suitable conductor material — use copper conductors only.
Power supply connections through the input connector — 8 AWG (between the server and the source). There are three conductors:
Chassis ground connection (optional if chassis ground wire is connected).
-48V or -60V (negative terminal, might be marked with a minus (-) symbol).
-48V or -60V return (positive terminal, might be marked with a plus (+) symbol).
Server chassis ground 8 AWG conductor (optional if power supply grounds are connected).
Grounding cable insulation color — Green/yellow.
Cable insulation rating — Minimum of 167˚F (75˚C). Low smoke fume, flame retardant insulation might be required in some installations.)
Use mating connectors for proper connection to the product DC inputs. Connectors are included in the server's shipping kit.
Branch circuit cable insulation color — According to applicable national electrical codes.
DC power source must meet TNV-2 requirements as defined by UL 60950-1 and IEC 60950-1.