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    MX2010 Router Grounding Specifications

    MX2010 Chassis Grounding Points Specifications

    To meet safety and electromagnetic interference (EMI) requirements and to ensure proper operation, the router must be adequately grounded before power is connected. To ground AC-powered or DC-powered routers, you must connect a grounding cable to earth ground and then attach it to the chassis grounding points by using the two screws provided (see Figure 1).

    Figure 1: Connecting Chassis Grounding Points on the MX2010 Router

    Connecting Chassis Grounding
Points on the MX2010 Router

    MX2010 Router Grounding Cable Lug Specifications

    Caution: 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.

    To ground AC–powered or DC–powered routers, connect a grounding cable to earth ground and then attach it to the chassis grounding points by using two washers and nuts. The top pair of grounding points fits UNC 1/4–20 nuts (American), and the lower pair fits M6 nuts (European). The grounding points are spaced at 0.625-in. (15.86-mm) centers. The cable lugs get attached to the grounding cable, and the two UNC 1/4–20 nuts and washers are used to secure the grounding cable to the top pair of grounding points.

    Warning: The router is a pluggable type A equipment installed in a restricted access location. It has a separate protective earthing terminal (Metric [–M6] and English [–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 MX2010 supports 4-AWG DC power cable lugs for 80-A input (see Figure 2), and 6-AWG DC power cable lugs for 60-A input (see Figure 3).

    Figure 2: 4-AWG Grounding Cable Lug

    4-AWG Grounding Cable Lug

    Figure 3: 6-AWG Grounding Cable Lug

    6-AWG Grounding 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 80-A PDM. Minimum 90°C wire, or as required by the local code.

    Power

    Eighteen pairs of 6-AWG (13.3 mm2), used with 80-A PDM. Minimum 90°C wire, or as required by the local code.

    MX2010 Router Grounding Cable Specifications

    The 48 VDC facility must be equipped with a circuit breaker rated 60 A (–48 VDC), or 80 A (–48 VDC) for each PDM input, and the grounding cable must be minimum 10 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 English [–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.

     

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    Modified: 2016-03-29