Cisco Catalyst 2950 Hardware Installation Manual page 169

Appendix C Connecting to DC Power
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 rear panel of the Catalyst 2950G-24-EI-DC switch or the front panel of the
Catalyst 2950ST-24 LRE 997 switch identifies the positive and negative positions
for both the A and B feed wires.
Catalyst 2950G-24-EI-DC switch.
Figure C-5
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 C-6
78-11157-05
Positive and Negative Positions
3 6 - 7 2 V
1 - 0 . 5 A
A
B
Stripping the DC-Input Power Source Wire
0.25 in. (6.3 mm) ± 0.02 in. (0.5 mm)
Catalyst 2950 Desktop Switch Hardware Installation Guide
Wiring the DC-Input Power Source
Figure C-5 shows the positions on the
C-7