Nortel Passport 7400, Hardware Installation, Maintenance, And Troubleshooting, Page: 272 / 438

272 Chapter 37 Hardware procedures
241-7401-240 5.2S1
Installing dc power cables in a 16-slot Passport switch
Install dc power cables to provide power to a power supply.
Prerequisites
• Before you install dc power cables, ensure you have met the appropriate
power requirements. For information, see 241-7401-200 Passport 7400
Hardware Description.
Procedure steps
1 Connect the dc power cable to the output terminals of the disconnect
device.
2 If your switch is in a Passport or seismic cabinet, you can route the cable
through the floor or ceiling with the other cables. Remove the smaller grill
cutout in either the top or the bottom of the cabinet with a 3/8-inch box
wrench.
or
If your switch is in a cabinet or rack that is not a Passport cabinet or rack,
ensure that it has the appropriate conduit entries or knockouts to
terminate the cable.
3 Route the dc power cable into the cabinet or rack through the knockout.
4 Run the cables beside the cable guide. Do not run the power cables inside
the cable guide.
WARNING
Risk of injury by electric shock
Before installing any cables, ensure that the circuit
breaker at the power distribution panel is turned off and
that the outlet is void of primary power.
WARNING
Damage to equipment; safety hazard
Protect the power feeds to the dc power supply as
described in 241-7401-200 Passport 7400 Hardware
Description. Failure to protect the power feeds can
damage the equipment and pose a safety hazard.