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Chapter 1 23
Addendum to D Class Enterprise Servers System Installation Guide
DC Power Supply
NOTE To protect the equipment from overload or short circuits that may cause
equipment damage or fire, the power supply is fused internally. For
added safety and integrity in the Central Office, the circuit which
connects to power supply should be protected with a 30 Amp over-current
fuse.
Figure 1-7 DC Power Cable Pin Diagram
Safety Grounding Procedures
Connect an earth ground cable to the grounding s tud provided o n the
power supply chassis. Attach the cable to the stud using the lockwasher
and nut provided. Preferably use at least a 10 AWG cable with a round
eyelet crimp-lug.
WARNING The computer system should at all times be connect ed t o chassis
ground. The stud has been provided near the input power
connector for this purpose. Failure to connect an earth ground
wire to the ground st ud on the computer system will in essence
leave the chassis floating, which could be hazardous to an
operator because of the potential of electric shock.
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