Juniper Networks M10, M5 manual DC Grounding, Connection, and Cable Specifications

Power Guidelines, Requirements, and Specifications

Figure 18: AC Plug Types

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For information about the AC power supply, including electrical specifications and a description of components, see “AC Power Supply” on page 17. For instructions on connecting the power cord during initial installation, see “Connect Power to an AC-Powered Router” on page 65. For instructions on replacing the power cord on an operating router, see “Disconnect and Connect AC Power” on page 101.

Power cords and cables must not block access to router components or drape where people could trip on them.

DC Grounding, Connection, and Cable Specifications

To ground a DC-powered router, connect a grounding cable to earth ground and then attach it to one of the chassis grounding points on the upper rear edge of the chassis. To supply power to the router, connect power cables to a separate, dedicated DC power source for each power supply and attach the cables to the quick connect terminals on each power supply. 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 the quick connect terminals to the power distribution panel.

Table 11 summarizes the specifications for the grounding and power cables, which you supply.

Table 11: DC Power and Grounding Cable Specifications

		Maximum
		Equal
Cable Type	Quantity and Specification	Length
Power	Two 12-AWG (3.33 mm2) single-strand-count wire cables	None
Grounding	One 12-AWG (3.33 mm2) single-strand-count wire cable	None

46M5 and M10 Internet Routers Hardware Guide