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Figure 44 on page 114
shows a typical DC source cabling arrangement.
Figure 44: Typical DC Source Cabling to the Router
All DC PSMs in a subsystem share the load. If one PSM fails in a redundant configuration, the remaining
PSMs provide power to FRUs. Up to nine PSMs might be required to supply power to a fully configured
router. A portion of power from each zone is reserved to power critical FRUs. These FRUs allow the system
to operate even if power to a complete zone fails.
CAUTION:
The power source cables might be labeled (+) and (-) to indicate 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 PDM.
WARNING:
CAUTION:
drape where people could trip on them.
SEE ALSO
You must ensure that power connections maintain the proper polarity.
For field-wiring connections, use copper conductors only.
Power cords and cables must not block access to device components or
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