APPENDIX D
Power Guidelines, Requirements, and
Specifications
•
T4000 Chassis Grounding Cable and Lug Specifications on page 335
•
T4000 DC Power System Electrical Specifications on page 336
•
T4000 DC Power Supply Specifications on page 337
•
T4000 DC Power Requirements on page 338
•
T4000 Power Management (Four 60-A Cables on a Six-Input DC Power
Supply) on page 340
•
T4000 Power Management (Three 80-A Cables on a Six-Input DC Power
Supply) on page 340
•
T4000 DC Power Cable and Lugs Specifications on page 341
•
T4000 DC Power Distribution on page 343
T4000 Chassis Grounding Cable and Lug Specifications
To meet safety and electromagnetic interference (EMI) requirements and to ensure
proper operation, the router must be adequately grounded before power is connected.
Two pairs of threaded inserts (PEM nuts) are provided on the right rear of the chassis for
connecting the router to earth ground. The left pair of grounding points fits M6 screws
(European), and the right pair fits UNC 1/4–20 screws (American). The grounding points
are spaced at 0.625-in. (15.86-mm) centers.
You must supply a grounding cable.
Table 45 on page 335
summarizes the specifications
for the grounding cable and lug.
Table 45: Grounding Cable Specifications
8-AWG (8.35 mm
2
), minimum 90°C wire, or as required by the
local code.
Cable specification
Cable lug; at 0.625-in. (15.86-mm) center line.
Connector specification
335
Copyright © 2013, Juniper Networks, Inc.
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