M7i DC Power Cable and Cable Lug Specifications
•
DC Power Cables on page 88
•
DC Power Lugs on page 89
DC Power Cables
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 field-wiring 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 field-wiring terminals to the power distribution panel.
Table 50 on page 88 summarizes the specifications for the DC power cables, which you
must supply.
Table 50: DC Power Cable Specifications
Maximum
Equal
LengthQuantity and Specification
NoneTwo 14-AWG (2.08 mm
2
) single-strand-count wire cables for each
power supply
WARNING: For field-wiring connections, use copper conductors only.
NOTE: Power cords and cables must not block access to router components
or drape where people could trip on them.
Figure 27 on page 89 shows how to attach the DC power cables. The power cables insert
into the field-wiring terminals located on each power supply— the input terminal is labeled
-48V and the return terminal is labeled RTN.
Copyright © 2019, Juniper Networks, Inc.88
M7i Multiservice Edge Router Hardware Guide
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