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270 Chapter 37 Hardware procedures
241-7401-240 5.2S1
Installing dc power cables in a 5-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 Route the dc power cables to the rear of the switch.
2 Secure the wires using the strain relief clip. The strain relief clip is on the
rear of the switch, below the openings for the power supply terminal
blocks.
3 Determine the length of the wires you require, and cut them to the
appropriate length. Ensure the ground wire is long enough to reach the
ground strip near the top of the switch.
4 Attach wire lugs to the ends of the wires.
5 Connect the -48/60 V dc and return wire lugs to the terminal block at the
rear of the shelf assembly. See figure “5-slot Passport switch dc power
cables” (page 271).
6 Connect the cables from the disconnect device to the power source.
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.