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Connect the Grounding Cable

You ground the router by connecting a grounding cable to earth ground and then attaching it to the chassis grounding points. To ground the ACX500 outdoor router:

  1. Verify that a licensed electrician has attached the cable lug, which is provided with the router, to the grounding cable.
  2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to an approved site ESD grounding point. See the instructions for your site.
  3. Ensure that all grounding surfaces are clean and brought to a bright finish before you make grounding connections.
  4. Connect the grounding cable to a proper earth ground.
  5. Detach the ESD grounding strap from the site ESD grounding point.
  6. Attach an ESD grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis.
  7. Place the grounding cable lug over the grounding points on the front of the chassis (see Figure 5).

    Note: The grounding point location on the ACX500 routers is the same for both the AC and the DC models.

  8. To protect the router from rust and corrosion, perform the following steps:
    1. Clean both the mating surfaces (the grounding cable lug and the ACX500 outdoor router’s grounding terminals).
    2. Apply a thin film ( 1 mm or 0.04 in.) of corrosion-preventing compound, such as NO-OX-ID, on the router’s grounding terminals.
    3. Press the lug onto the conductive surface unit to force out the excess corrosive-preventing compound.
  9. Secure the grounding cable lug with the washers and screws. The holes are sized for SAE 10-32 screws. Apply 4 lb-in. (0.49 Nm) of torque to each screw. Do not overtighten the screw. (Use a number 2 Phillips screwdriver.)


    • Ensure that each grounding cable lug seats flush against the surface of the grounding points as you are tightening the screws. Ensure that each screw is properly threaded into the grounding points. Applying installation torque to the screw when improperly threaded can damage the terminal.
    • The maximum torque rating of the grounding screws on the router is 4 lb-in. (0.49 Nm). The grounding screws can be damaged if excessive torque is applied. Use only a torque-controlled driver to tighten screws. Use an appropriately sized driver, with a maximum torque capacity of 5 lb-in. or less. Ensure that the driver is undamaged and properly calibrated and that you have been trained in its use. You might want to use a driver that is designed to prevent overtorque when the preset torque level is achieved.
  10. Dress the grounding cable, and verify that it does not touch or block access to router components, and that it does not drape where people could trip on it.

Figure 5: Grounding Points on the ACX500 Outdoor Routers

Grounding Points
on the ACX500 Outdoor Routers

Modified: 2015-08-26