T640 Dc Power Cable And Lug Specifications; Figure 56: T640 Dc Power Cable Lug; Table 73: Number Of Cables Required; Table 74: T640 Power Cable Specifications - Juniper T640 Hardware Manual

T640 Core Router Hardware Guide

T640 DC Power Cable and Lug Specifications

Table 73: Number of Cables Required

Power Supply
2-input 160-A DC power supply
3-input 240-A DC power supply
4-input 240-A DC power supply
132
The accessory box shipped with the T640 router includes eighteen 4-AWG (21.2 mm
cable lugs for the DC cables that attach to the terminal studs of each power supply (see
Figure 56 on page 132). the number of DC cables and cable lugs required varies depending
on the power supply (see Table 73 on page
lug. One cable lug shown is also used for the grounding the chassis.
CAUTION: Before router installation begins, a licensed electrician must attach
a cable lug to the power cables that you supply. A cable with an incorrectly
attached lug can damage the router.

Figure 56: T640 DC Power Cable Lug

End view
0.28
0.55
2 holes
0.08 0.25 0.63

Table 74: T640 Power Cable Specifications

Quantity and Specification
2
Eight 4-AWG (21.2 mm ) (minimum)
copper conductor, or as required by the
local code.
WARNING: For field-wiring connections, use copper conductors only.
For other electrical safety information, see
Guidelines and Electrical Codes" on page
132). Each DC power cable requires one cable
2.25
Crimp area
0.37
All measurements in inches
Number of DC Cables per Power Supply
4
6
8
Connector Specification
Cable lug; dual hole, sized to fit 1/4-20 UNC terminal
studs at 15.86-mm (0.625-in.) center line.
"T640 General Electrical Safety
529.
Copyright © 2017, Juniper Networks, Inc.
2
)
4 AWG
conductor