Chassis Grounding

To meet safety and electromagnetic interference (EMI) requirements and to ensure proper operation, the Services Router must be adequately grounded before power is connected. In addition to the grounding pin on the AC power plug cord, a threaded insert (PEM nut), screw, and washer are provided on the rear of the chassis to connect the router to earth ground.

Before router installation begins, a licensed electrician must attach a cable lug to the grounding and power cables that you supply. A cable with an incorrectly attached lug can damage the router (for example, by causing a short circuit).

• For Services Routers without Avaya VoIP modules—The grounding cables must be 14 AWG single-strand wire cable, and must be able to handle amperage up to 20 A.

  Each grounding lug must be a ring-type, vinyl-insulated TV14-6R lug, or equivalent, to accommodate the 14 AWG cable.

• For Services Routers with Avaya VoIP modules—The grounding cables must be 10 AWG single-strand wire cable, and must be able to handle amperage up to 8 A.

  Each grounding lug must be a ring-type, vinyl-insulated TV14-6R lug, or equivalent, to accommodate the 10 AWG cable.

To ground the router before connecting power, you connect the grounding cable to earth ground and then attach the lug on the cable to the chassis grounding point, with the screw. (See Connecting Power.)