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Connecting the ACX500 Router to Earth Ground

You must ground both the AC-powered and the DC-powered routers before connecting them to power. Failing to ground the router properly might result in shock hazard.

To ground the router, you need the following tools:

  • Phillips (+) screwdriver, number 2

  • Electrostatic discharge (ESD) grounding wrist strap

  • Two 0.5-in. long stainless steel SS 316 SAE 10-32 screws, and flat washers (not provided)

  • Grounding lug, Panduit LCD6-10A-L or equivalent for the ACX500 indoor router, and Panduit LCCF6-14A-L for the ACX500 outdoor router (not provided)

  • Grounding cable, minimum 6 AWG (13.3 mm2) 90° C wire for both the ACX500 indoor and outdoor routers (not provided)

  • Corrosion-preventing compound for the ACX500 outdoor router, such as NO-OX-ID (not provided)


The ACX500 outdoor router has a provision for connecting a two-hole grounding lug (Panduit LCCF6-14A-L). Ensure that the router is properly grounded with 6-AWG copper wire with this specified two-hole lug. Refer ACX500 Router Grounding Specifications for more details on grounding specifications for the ACX500 router.

Warnung Warnung Der Outdoor-Router ACX500 bietet die Möglichkeit, eine Erdungsklemme mit zwei Öffnungen anzuschließen (Panduit LCCF6-14A-L). Stellen Sie sicher, dass der Router ständig über ein 6-AWG-Kabel und die entsprechende Klemme geerdet wird.

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

  1. Verify that a licensed electrician has attached the cable lug provided with the router to the grounding cable.
  2. Attach an ESD grounding strap to your bare wrist, and connect the other end of 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 grounding connections are made.
  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 other end of the strap to an ESD grounding point.
  7. Place the grounding cable lug over the grounding points on the front of the chassis (see Figure 1 and Figure 2).
    Figure 1: Grounding Point Location on the ACX500 Indoor RouterGrounding Point Location on the ACX500 Indoor Router
    Grounding terminals
    Figure 2: Grounding Point Location on the ACX500 Outdoor RouterGrounding Point Location on the ACX500 Outdoor Router
    • In the ACX500 indoor routers, the grounding points are located on the front left of the router.

    • In the ACX500 outdoor routers, the grounding points are located just below the power inlet port.

    • The location of the grounding points on the ACX500 routers is the same for both the AC and the DC variants.

    For the ACX500 outdoor routers, perform the following additional steps as rust-preventative and corrosion-preventative measure:

    1. Clean both the mating surfaces (the grounding cable lug and the ACX500 outdoor router grounding terminals).
    2. Apply a thin film (0.04 in. or 1 mm) of corrosion-preventing compound, such as NO-OX-ID, on the ACX500 outdoor router’s grounding terminals.
    3. Press the lug onto the conductive surface unit in order to force out the excess corrosion-preventing compound.
  8. 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). See Figure 3 and Figure 2.
    Figure 3: Grounding Points on the ACX500 Indoor RouterGrounding Points on the ACX500 Indoor Router
    Grounding lug
    SAE 10-32 screws and washers

    Ensure that each grounding lug sits 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. (0.56 Nm) 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.

  9. Verify that the grounding cabling is correct, 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.