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Catalyst 3850 Switch Hardware Installation Guide
OL-26779-02
Chapter 4 Power Supply Installation
Installing a DC Power Supply
Warning
When installing or replacing the unit, the ground connection must always be made first and
disconnected last.
Statement 1046
Caution Follow the grounding procedure instructions, and use a UL-listed lug (included in the accessory kit).
Follow these steps to install either a single-ground lug or a dual-ground lug on the switch. Make sure to
follow any grounding requirements at your site.
Step 1 Use the ground lug screw and the lug ring for a single-ground connection. Use the dual-ground adapter
and dual-hole lug for a dual-ground connection.
Step 2 Strip the 12-gauge or 8-gauge ground wire to 0.5 inch (12.7 mm) ± 0.02 inch (0.5 mm) (Figure 4-8).
Stripping more than the recommended amount of wire can leave exposed wire from the connector. Use
12-gauge copper ground wire for the single-ground connection. Use 8-gauge copper ground wire for the
dual-ground connection.
Figure 4-8 Stripping the Ground Wire
Step 3 Slide the open end of the ground lug over the exposed area of the wire.
Step 4 Using a Panduit crimping tool, crimp the ground lug to the wire (Figure 4-9).
Figure 4-9 Crimping the Ground Lug
Step 5
Use the ground screw to attach the single-ground lug to the switch rear panel. Use two ground screws to
attach the dual-hole lug to the switch rear panel (Figure 4-10).
Step 6 Using a ratcheting torque screwdriver, torque the ground-lug screws to 60 lbf-in. (960 ozf-in.).
Step 7 Connect the other end of the grounding wire to an appropriate grounding point at your site or to the rack.
Insulation
Wire lead
0.5 in. (12.7 mm)
±
0.02 in. (0.5 mm)
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