Cisco Systems ME 3400 appendix Grounding the Switch, Preparing the Ground Wire

Appendix C Connecting to DC Power

Grounding the Switch

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

•Four leads of copper wire. The DC terminal block (Figure C-11) 12-28 AWG copper wire.

Note We recommend that you use 18 AWG copper wiring for Network Equipment Building Systems (NEBS) installations. This guideline follows the standard guidelines for DC power wiring in the Central Office.

•Wire-stripping tools.

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

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

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. A ground lug and screws are located both on
	the front panel and on the rear panel of the switch. Only one ground connection is required.
	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 millimeter [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.

Cisco ME 3400 Ethernet Access Switch Hardware Installation Guide

C-2 OL-7677-02