Installation Guide

• Additional grounding hardware appropriate to the earth ground connection at your site
Warning
Be sure to connect the chassis ground wire before you connect any power cables.
To ground the switch:
1. At one end of the wire, strip the insulation to expose 1/2-inch (12 mm) of bare wire.
2. Identify the grounding lug on the back of the switch.
The grounding lug is next to the edge of the back panel, identified by the international symbol for
earth ground:
On a Summit X250e series switch, the grounding lug is on the right side.
On a Summit X450a series switch, the grounding lug is on the left side.
3. Insert the stripped wire into the grounding lug.
4. Using a straight-tip torque screwdriver, tighten the retaining screw to 20 in‑lb (2.25 N m).
See the following figures.
Figure 258: Attaching the Ground Wire to a Summit X250e Series Switch
Figure 259: Attaching the Ground Wire to a Summit x450a Series Switch
5. Connect the other end of the wire to a known reliable earth ground point at your site.
After grounding the switch, follow the instructions in Connecting the X250e or X450a DC Wiring
Harness to the DC Source Voltage on page 331.
Connecting DC-Powered Switches to a Power Source
Installing Switches
330 Summit Family Hardware Installation Guide