Juniper SRX5400 Hardware Manual page 213

DC Power Source Cabling for the SRX5400 Services Gateway
Related
Documentation
Copyright © 2014, Juniper Networks, Inc.
Appendix C: SRX5400 Services Gateway Power Guidelines, Requirements, and Specifications
DC Power Cable Lug Specifications for the SRX5400 Services Gateway on page 200
Figure 69 on page 199 shows a typical DC source cabling arrangement.
Figure 69: Typical DC Source Cabling to the Services Gateway
The DC power supplies in slots
feeds derived from feed A, and the DC power supplies in slots
powered by dedicated power feeds derived from feed B. This configuration provides the
commonly deployed A/B feed redundancy for the system.
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.
WARNING: For field-wiring connections, use copper conductors only.
CAUTION: Power cords and cables must not block access to device
components or drape where people could trip on them.
Calculating Power Requirements for the SRX5400 Services Gateway on page 189
SRX5400 Services Gateway DC Power Supply Specifications on page 197
DC Power Circuit Breaker Requirements for the SRX5400 Services Gateway on page 198
DC Power Cable Specifications for the SRX5400 Services Gateway on page 200
and must be powered by dedicated power
PEM0 PEM1
PEM2 and PEM3 must be
(+) and (–) to indicate
199