Connecting to an AC Power Source
Cisco AS5800 Universal Access Server Hardware Installation Guide3-2
This section explains how to attach the power cables and rack-mount the AC-i nput power shel f. F or
detailed cabling specification tables, refer to AppendixA, “Cisco AS5800 Specifications.”
Parts Required
You need the following tools and parts to rack-mount the power shelf:
•AC-input power shelf or enhanced AC-input power shelf wit h dual AC power supplies
•Two AC power cables
•Two pairs of DC interconnect cables (CAB-5800-ACDC=)
•One DB-25 to DB-9 monitor cable (CAB-PEM=)
•One 6 gauge ground cable
•Two hex nuts and M4 screws
•Four 10-32x 3/8-in. slotted screws
•One metal safety cover and screws
•3/8-in. nut driver
•No.2 Phillips screwdriver
•1/4-in. flat-blade screwdriver
•Wire strippers, if needed, for your DC power cables
•Several cable ties to temporarily anchor the cables out of the way, if necessary
To connect the power cables and power up the sy stem, proceed to the followi ng sectio n “Connecting
the AC Power Cables.”
Mount the Cables on the AC Power Supply
It is possible to mount the cables on the AC power supply after it has been rack-mounted, but given
the limited space in and around many equipment racks, we recommend that you mount the cables
before rack-mounting the AC power supply. Figur e3-1 shows cables mounted on a standard AC
power supply, but the process is the same for the enhanc ed po wer supp ly. For a picture of the rear of
the enhanced power supply, see Figure1-17. To mount the AC power supply cables:
Step1 Attach the ground-cable double ring lug to the ground posts on the rear of the AC-input
power shelf. (See Figure3-1, lower chassis.)
Step2 Secure the double ring lug to both threaded ground posts with a hex nut on each stud.
Step3 Attach two red DC-interconnect power-c able ring lugs to the termin al stud labeled BUS+
on the AC power shelf chassis rear. (See Figure3-1.)
Step4 Secure the ring lugs to the threaded stud with a hex nut.
Step5 Attach two black DC-interconnect power-cable ring lugs to the terminal stud labeled
BUS– on th e AC powe r sh el f ch ass i s r ea r. (Refer to F igu r e 3-1.)
Step6 Secure the ring lugs to the threaded terminal stud with a hex nut.
Step7 Attach the monitor cable DB-25 plug to the DB-25 receptacle on the rear of the AC-input
power shelf. (See Figure3-1.) Tighten the jackscrews.