Dc Power Cable Specifications For The Mx480 Router; Figure 121: Typical Dc Source Cabling To The Router - Juniper MX480 Hardware Manual

MX480 3D Universal Edge Router Hardware Guide
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Figure 121: Typical DC Source Cabling to the Router

The DC power supplies in
derived from feed A , and the DC power supplies in
dedicated power feeds derived from feed
deployed feed redundancy for the system.
A/B
CAUTION: You must ensure that power connections maintain the proper
polarity. The power source cables might be labeled
their polarity. There is no standard color coding for DC power cables. The
color coding used by the external DC power source at your site determines
the color coding for the leads on the power cables that attach to the terminal
studs on each power supply.
WARNING: For field-wiring connections, use copper conductors only.
CAUTION: Power cords and cables must not block access to device
components or drape where people could trip on them.
In Case of an Electrical Accident on page 252
MX480 DC Power Supply Description on page 36
Connecting Power to a DC-Powered MX480 Router with Normal Capacity Power
Supplies on page 100
Replacing an MX480 DC Power Supply Cable on page 220

DC Power Cable Specifications for the MX480 Router

DC Power Cable Lug Specifications—The accessory box shipped with the router includes
the cable lugs that attach to the terminal studs of each power supply (see
page 283).
and must be powered by dedicated power feeds
PEM0 PEM1
PEM2
. This configuration provides the commonly
B
and PEM3 must be powered by
and to indicate
(+) (–)
Figure 122 on
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