Cisco 3750 - Manual (Page 45)

3-5
Catalyst 3750 Metro Switch Hardware Installation Guide
OL-9160-02
Chapter 3 Connecting the Power Supply
Connecting to DC Power
Grounding the Switch
Warning This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the
absence of a suitably installed ground conductor. Contact the appropriate electrical inspection
authority or an electrician if you are uncertain that suitable grounding is available. Statement 1024
Warning When installing or replacing the unit, the ground connection must always be made first and
disconnected last. Statement 1046
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.
Preparing the Ground Wire
Before you ground the switch to earth ground, you must prepare the ground wire. Follow these steps.
Make sure to follow any grounding requirements at your site.
Step 1 Locate the ground lug and the two number-10-32 screws on the rear panel of the switch.
Use a standard Phillips screwdriver or a ratcheting torque screwdriver with a Phillips head to remove the
ground lug. 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 millimeter [mm]) ± 0.02 inch (0.5 mm) as shown in
Figure 3-4 .
Figure 3-4 Stripping the Ground Wire
Step 3 Slide the open end of the ground lug over the exposed area of the 6-gauge wire.
Step 4 Using a Panduit crimping tool, crimp the ground lug to the 6-gauge wire (see Figure 3-5 ).
Insulation
Wire lead
0.5 in. (12.7 mm) ± 0.02 in. (0.5 mm)
60528