Juniper J-series Services Router J2320 Getting Started Manual page 131

J2350 routers—minimum 15 A (–48 VDC)
J4350 and J6350 routers—minimum 25 A (–48 VDC)
If the J6350 router contains redundant DC power supplies, one power supply must
be powered by a dedicated power feed derived from feed
supply must be powered by a dedicated power feed derived from feed
configuration provides the commonly deployed
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 set
of terminal studs to the power distribution panel.
CAUTION: You must ensure that power connections maintain the proper polarity.
The power source cables might be labeled
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: Power plant ground and chassis ground must be connected to the same
building ground.
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.
Each DC power cable (–48 VDC and return) must be 14 AWG single-strand wire cable,
or as permitted by the local code. Each lug attached to the power cables must be a
ring-type, vinyl-insulated TV14-6R lug, or equivalent.
NOTE: Power cords and cables must not block access to router components or drape
where people might trip on them.
For information about the DC power supply, see "J2320 and J2350 Services Router
Hardware Features" on page 13 and "J4350 and J6350 Services Router Hardware
Features" on page 26.
To connect the DC power cable during initial installation, see "Connecting DC
Power" on page 124.
To replace a DC power cable, see "Replacing DC Power Supply Cables" on page 196.
Chapter 5: Preparing for Router Installation
feed redundancy for the system.
A/B
(+) and ( ) to indicate their polarity. There
Power Guidelines, Requirements, and Specifications
, and the other power
A
B . This
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