Cisco Systems 3550 manual Grounding the Switch

Appendix C DC Power Connections

Connecting to DC Power

•6-gauge copper ground wire (insulated or noninsulated)

•Four leads of 18-gauge copper wire

•Wire-stripping tools for stripping 6- and 18-gauge wires

Grounding the Switch

Warning This equipment is intended to be grounded. Ensure that the host is connected to earth ground during normal use. Statement 39

Caution To make sure that the equipment is reliably connected to earth ground, follow the grounding procedure instructions, and use a UL-listed lug suitable for number-6 AWG wire and two number-10-32 ground-lug screws.

Warning When installing the unit, always make the ground connection first and disconnect it last. Statement 42

To ground the switch to earth ground, follow these steps. Make sure to follow any grounding requirements at your site.

Step 1 Locate and remove the ground lug and the two number-10-32 ground-lug screws from the rear panel of the switch. (See Figure C-3for location.) Use a standard Phillips screwdriver or a ratcheting torque screwdriver with a Phillips head. Set the screws and the ground lug aside.

Step 2 If your ground wire is insulated, use a wire stripping tool to strip the 6-gauge ground wire to 0.5 inch (12.7 mm) ± 0.02 inch (0.5 mm), as shown in Figure C-1.

Figure C-1 Stripping the Ground Wire

0.5 in. (12.7 mm) ± 0.02 in. (0.5 mm)

Insulation

Wire lead

60528

Step 3 Slide the open end of the ground lug over the exposed area of the 6-gauge wire.

Catalyst 3550 Multilayer Switch Hardware Installation Guide

C-2 OL-6155-01