Cisco Catalyst 2955 Series, Hardware Installation Manual, Page: 97 / 298

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Catalyst 2955 Hardware Installation Guide
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Chapter 3 Installation
Connecting the Switch to the Power Converter
Step 3
Measure a strand of twisted-pair copper wire (18 AWG) long enough to connect
the power converter to the switch. Ensure that the wire is long enough to loop
through the ferrite and still maintain 4 inches of thermal spacing between the
switch and the power converter.
Step 4
Using an 18-gauge wire-stripping tool, strip both ends of the twisted pair wires to
0.25 inch (6.3 mm) ± 0.02 inch (0.5 mm). Do not strip more than 0.27 inch (6.8
mm) of insulation from the wire. Stripping more than the recommended amount
of wire can leave exposed wire from the power and relay connector after
installation. (See
Figure 3-6 .)
Step 5
Insert the exposed wires into the power and relay connector, as shown in
Figure 3-7 . Make sure that you cannot see any exposed wire. Only wire with
insulation should extend from the connection.
Warning
An exposed wire lead from a DC-input power source can conduct harmful levels
of electricity. Be sure that no exposed portion of the DC-input power source
wire extends from the power and relay connector.
Statement 122
Step 6 Use a ratcheting torque flathead screwdriver to torque the power and relay
connector captive screw (above the installed wire leads) to 4.5 in-lbs. (72 ozf-in.).
(See
Figure 3-8 .)
Caution
Do not overtorque the power and relay connector captive screws. The
recommended maximum torque is 4.5 in-lbs.
Step 7
Connect the other end of the positive wire (connected to VA) to the far-left power
converter DC positive-output connection, and connect the other end of the return
wire (connected to RT) to the far-left power converter return-output connection.
Step 8
Tighten the terminal block screws. (See Figure 3-14 .)