Figure 31: Typical Dc Source Cabling To The Router; Table 66: Dc Power Cable Specifications - Juniper M320 Hardware Manual

M320 Multiservice Edge Router Hardware Guide
108

Table 66: DC Power Cable Specifications

Cable Type Quantity and Specification
Power Eight 4-AWG (21.2 mm
copper conductor, or as permitted by
the local code.
CAUTION: You must ensure that power connections maintain the proper
polarity. The power source cables might be labeled
their polarity. There 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.
Figure 31 on page 108 shows a typical DC source cabling arrangement.

Figure 31: Typical DC Source Cabling to the Router

WARNING: For field-wiring connections, use copper conductors only.
For other electrical safety information, see M320 General Electrical Safety
Guidelines and Electrical Codes,
on page 346, and
Devices" on page
CAUTION: Power cords and cables must not block access to router
components or drape where people could trip on them.
For a description of the DC power supply, see , as opposed to the DC power configuration
(see "M320 DC Power Supplies Description" on page 74
instructions on connecting the DC power and grounding cables during initial installation,
2
) (minimum)
"M320 DC Power Electrical Safety Guidelines"
"DC Power Electrical Safety Warnings for Juniper Networks
347.
Connector Specification
Cable lug; dual hole, sized to fit
1/4-20 UNC terminal studs at
15.86-mm (0.625-in.) center line.
and to indicate
(+) (–)
for more information). For
Copyright © 2015, Juniper Networks, Inc.