Chapter 2 Installation
Connecting to DC Power
2-28
Catalyst 2950 Desktop Switch Hardware Installation Guide
78-11157-03
Step 2 Identify the positive and negative feed positions for the terminal block
connection. The wiring sequence is positive to positive and negative to negative
for both the A and the B feed wires. The switch rear panel identifies the positive
and negative positions for both the A and B feed wires.
Figure 2-25 Positive and Negative Positions on the Switch Rear Panel
Step 3
Using an 18-gauge wire-stripping tool, strip each of the four wires coming from
the DC-input power source to 0.27 inch (6.6 mm) ± 0.02 inch (0.5 mm). Do not
strip more than 0.29 inch (7.4 mm) of insulation from the wire. Stripping more
than the recommended amount of wire can leave exposed wire from the terminal
block plug after installation.
Figure 2-26 Stripping the DC-Input Power Source Wire
Step 4 Insert the exposed wire of one of the four DC-input power source wires into the
terminal block plug, as shown in Figure 2-27. Make sure that you cannot see any
wire lead. Only wire with insulation should extend from the terminal block.
36 - 72V
1 - 0.5A
A
B
65292
0.27 inch (6.6 mm)
±
0.02 inch (0.5 mm)
60531
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