Connection and Grounding Requirements
On an AC-powered router, plug each power supply into a grounded 180-264 VAC power receptacle. The receptacle provides the grounding for the router, so no additional grounding is necessary. The receptacle must be within about 8 ft (2.5 m) of the router and must be easily accessible.
On a DC-powered router, connect each power supply to a separate, dedicated DC power source. Most sites distribute DC power through a main conduit that leads to frame-mounted DC power distribution panels, one of which might be located at the top of the rack that houses the router. A pair of cables (one input and one return) connects each power supply to the power distribution panel.
To meet safety and EMC requirements and to ensure proper operation, a DC-powered router must be earth-grounded before power is connected. Each power supply has a pair of terminal studs for connecting the router to earth ground.
For power and grounding connection instructions, see Provide Power to the Router.
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