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C-1
Catalyst 3750 Switch Hardware Installation Guide
OL-6336-07
APPENDIX
C
Connecting to DC Power
This appendix describes how to make DC power connections to the Catalyst 3750G-12S-SD switch.
See the “Installing the Switch” section on page 2-11 for instructions on installing the switch.
Connecting to DC Power
To connect the Catalyst 3750G-12S-SD switch to a DC-input power source, follow the steps in these
sections:
• Preparing for Installation, page C-2
• Grounding the Switch, page C-2
• Wiring the DC-Input Power Source, page C-4
Warning
Ethernet cables must be shielded when used in a central office environment.
Statement 171
Warning
This unit is intended for installation in restricted access areas. A restricted access area can be
accessed only through the use of a special tool, lock and key, or other means of security.
Statement 1017
Note We recommend that you use 18 AWG copper wiring for Network Equipment Building Systems (NEBS)
installation. This guideline follows the standard guidelines for DC power wiring in the Central Office.
Note The grounding architecture of this product is DC-isolated (DC-I).