NEC DS2000 Hardware Manual page 19

To attach the ground wires (Figure 1-9):
1. Remove the lug on the ground connection you want to connect.
2. Follow Figure 1-10 Installing RFI Suppressor Assemblies on page 1-14 and run the ground wire(s)
through the FRI Suppressor Assembly as shown.
3. Crimp ring terminals as required to the ground wires.
4. For earth ground:
Run a ground wire from the ETH lug to a known earth ground.
For PBX Ground:
Run a ground wire from the PBXG lug to the telco ground.
If your system will have a T1 Trunk PCB:
Run a 12 AWG jumper wire from the SG (Signal Ground) lug to the ETH (Earth Ground) lug.
5. Reinstall and firmly tighten the lug(s) removed in step 1 above.
DS2000 Hardware Manual
!! Important !!
Do not plug in the power cord or reinstall the right side panel
until all PCB installation and cabling are complete.
For T1 Trunk
PCB only
Figure 1-9: Attaching the Ground Wires
Grounding the Cabinet
To earth ground
To telco ground
4 Slot Cabinet Shown
Section 1: Installing the Cabinet N 1-13
1