Cisco VG202 Hardware Installation Guide - Page 36

Installing the Ground Connection Chapter 3 Installing Cisco VG202 and Cisco VG204 Voice Gateways 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 Use copper conductors only. Statement 1025 To connect the chassis to a reliable earth ground, perform the following steps: Step 1 Locate a suitable ground. Tip Using a multimeter, measure the resistance between various possible ground locations, such as between the ground of a junction box (outlet) and the ground of a power tap, between the ground of a junction box and a metal water pipe, between the Cisco VG202 or Cisco VG204 chassis and the ground of a power tap, and between the Cisco VG202 or Cisco VG204 chassis and the ground of a junction box. A good ground connection should read between 0.0 and 0.5 ohms. Step 2 Step 3 Strip one end of the ground wire to the length required for the ring terminal. Crimp the ground wire to the ground lug or ring terminal, using a crimp tool of the appropriate size. (See Figure 3-4.) Figure 3-4 Crimping a Ground Lug onto the Ground Wire 10360 Step 4 Attach the ring terminal to the chassis as shown in Figure 3-5. For a ring terminal, use one of the screws provided. Use a number-2 Phillips screwdriver, and tighten the screws to a torque of 8 to 10 in-lb (0.9 to 1.1 N-m). Cisco VG202 and Cisco VG204 Voice Gateways Hardware Installation Guide 3-8 OL-15959-01