Installation guide

C-7
Catalyst 3550 Multilayer Switch Hardware Installation Guide
78-11358-06
Appendix C DC Power Connections
Connecting to DC Power
Step 3 Using a 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), as shown in
Figure C-6. 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 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 C-7. Make sure that you cannot see any
wire lead. Only wire with insulation should extend from the terminal block.
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 terminal block plug.
Figure C-7 Inserting Wires in the Terminal Block Plug
0.25 inch (6.3 mm)
±
0.02 inch (0.5 mm)
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Return
Negative
Return
Feed A
Feed B
Negative