Table 44: Supported Three-Phase Wye Ac Wire Gauge - Juniper MX2020 Hardware Manual

Copyright © 2015, Juniper Networks, Inc.
NOTE: The color of each AC power wire might vary. The MX2020 chassis
is not sensitive to phase rotation sequence—either CW or CCW will operate
correctly.
CAUTION: Wire label configuration is for Juniper Networks supplied cable
only. If using your own cable, make sure you use the proper connections.
To insert wires into the terminal block that serves three PSMs:
a. Insert the grounding wire into the grounding point labeled
b. Insert the wire labeled
c. Insert the wire labeled
d. Insert the wire labeled
e. Insert the wire labeled
NOTE: The terminal connections have either slotted screws or hex screws.
Use a 1/4-in. slotted screwdriver for the slotted screws. Use a 5/32-in.
(4 mm) Allen wrench for the 5/16-in. hex screws.
WARNING: To protect power supplies from input voltage that may be
caused by miswired PDMs, before reinstalling the metal cover to the wiring
compartment apply AC voltage to the PDM (with disengaged PSM) to
make sure that two LEDs on the PDM are lit green and that the AC voltage
between AC terminal blocks A1-N1, B1-N1, C1-N1, A2-N2, B2-N2, and C2-N2
for three-phase wye PDM is not more than 264VAC when measured with
a DVM. Then turn off the AC breaker de-energizing the PDM and install
the metal cover and engage all AC PSMs.
NOTE: Three-phase wye AC wire assembly kits can be purchased from
Juniper Networks.

Table 44: Supported Three-Phase Wye AC Wire Gauge

Wire Gauge
5 x 10-AWG or equivalent
Chapter 11: Transceiver and Cable Specifications
L1 into the input terminal labeled
into the input terminal labeled
L2
L3 into the input terminal labeled
into the input terminal labeled
N
Description
5 conductor wires, each wire is 10-AWG
.
GND
A2 .
.
B2
C2 .
.
N2
133