Cisco 5500 Manual page 14

Multiswitch router
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Replacing Hardware Components
The ground wire must be 10 to 12 AWG. Use the larger gauge ground wire when the switch is further
away from the ground location.
Step 3
Turn the power switch to the OFF (0) position on the power supply you are installing
(see
Figure
Use both hands to remove and install power supplies.
Caution
Warning
Keep hands and fingers out of the power supply bays. High voltage is present on the power backplane
when the system is operating.
Grasp the power supply handle with one hand and place your other hand underneath as you slowly insert
Step 4
the power supply into the bay (see
Using a screwdriver, tighten the captive screws on the power supply (see
Step 5
Remove the terminal block cover (see
Step 6
cover and slide the cover straight off the terminal block.
Attach the appropriate lugs to the DC-input wires. Maximum width of the lugs is 0.300 inch (7.6 mm).
Step 7
Suggested lugs are AMP 322985 or 52941. Suggested DC-input wires are 10 AWG.
When stranded wiring is required, use approved wiring terminations, such as closed-loop or spade-type
Caution
with upturned lugs. These terminations must be the appropriate size for the wires and clamp both the
insulation and conductor.
Connect the DC-input wires to the terminal block.
Step 8
If not already done, route the DC-input power cable through the conduit from your power source,
through the conduit bracket on the power supply, and make a sufficient length of wire available to attach
to the three terminal block connections.
Attach and tighten the conduit to the conduit bracket. How this conduit is attached depends on your site;
its attachment is beyond the scope of this document.
Connect the ground wire first.
Caution
Connect the DC-input wires to the terminal block (see
Step 9
ground to ground, positive to positive (line to L), and negative to negative (neutral to N). Note that the
ground wire should always be connected first and disconnected last.
Step 10
After ensuring that all wire connections are secure, reinstall the terminal block cover.
To prevent a short-circuit or shock hazard after wiring the DC-input power supply, reinstall the terminal
Caution
block cover.
Cisco MGC Software Release 7 Operations, Maintenance, and Troubleshooting Guide
7-14
7-10).
Figure
Chapter 7
Maintaining the Cisco Catalyst 5500 Multiswitch Router
7-11).
Figure
7-9). Remove the two screws securing the terminal block
Figure
7-12). The proper wiring sequence is
Figure
7-9).
OL-0542-06

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