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MX2000 Router Grounding Specifications

MX2000 Series Chassis Grounding Points Specifications

You must install the router in a restricted-access location and ensure that the chassis is always properly grounded. The router has a two-hole protective grounding terminal provided on the chassis. See Figure 1. Under all circumstances, use this grounding connection to ground the chassis. For AC-powered systems, you must also use the grounding wire in the AC power cord along with the two-hole grounding lug connection. This tested system meets or exceeds all applicable EMC regulatory requirements with the two-hole protective grounding terminal.

Figure 1: Connecting to a Chassis Grounding Point on the MX2000 Series Router Connecting to a Chassis Grounding Point on the MX2000 Series Router

MX2000 Series Router Grounding Cable Lug Specifications

CAUTION:

Before you install the router, 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.

The chassis has two grounding points. The upper pair is sized for UNC 1/4-20 nuts, and the lower pair is sized for M6 nuts. You only need to connect to one of the grounding points to properly ground the router. The grounding points are spaced at 0.625-in. (15.86-mm) centers. To ground the router, attach cable lugs to the grounding cable and secure the grounding cable to a grounding point on the chassis with two screws. The router is shipped with two Standard UNC 1/4–20 screws for connecting to the top (left) pair of grounding points.

Warning:

The router is installed in a restricted access location. It has a separate protective earthing terminal (Metric [–M6] and Standard [–¼-20] screw ground lugs) provided on the chassis in addition to the grounding pin of the power supply cord. This separate protective earth terminal must be permanently connected to earth.

Note:

The MX2000 series routers support 4-AWG DC power cable lugs for 80-A input and for 60-A input (see Figure 2).
Figure 2: 4-AWG DC Power Cable Lug 4-AWG DC Power Cable Lug

Table 1 summarizes the specifications for the power cables, which you must supply.

Table 1: DC Power Cable Specifications

Cable Type

Quantity and Specification

Power

Eighteen pairs of 4-AWG (21.2 mm2), used with 60-A or 80-A PDM. Minimum 75°C wire, or as required by the local code.

You can select 60-A or 80-A input feed capacity on the DC PDM by setting the DIP switch on the PDM to the rated amperage of the DC power input feeds.

MX2000 Series Router Grounding Cable Specifications

The grounding cable must be minimum 4 AWG, or as required by the local code.

Note:

Additional grounding is provided to an AC-powered router when you plug its PDMs into grounded AC power receptacles.
Warning:

The router is installed in a restricted-access location. It has a separate protective earthing terminal (Metric [–M6] and Standard [–¼-20] screw ground lugs) provided on the chassis in addition to the grounding pin of the power supply cord. This separate protective earth terminal must be permanently connected to earth.