Cisco NCS 560-4 Hardware Installation Manual page 28

Safety With Electricity
Warning
If you connect or disconnect the console cable with power applied to the switch or any device on the network,
an electrical arc can occur. This could cause an explosion in hazardous location installations. Be sure that
power is removed or the area is nonhazardous before proceeding. To verify switch operation, perform POST
on the switch in a nonhazardous location before installation. Statement 1065
Warning
Installation of the equipment must comply with local and national electrical codes. Statement 1074
Warning
Hazardous voltage or energy may be present on DC power terminals. Always replace cover when terminals
are not in service. Be sure uninsulated conductors are not accessible when cover is in place. Statement 1075
When working on equipment powered by electricity, follow these guidelines:
• Locate the room's emergency power-off switch. If an electrical accident occurs, you will be able to
quickly turn off the power.
• Before working on the system, turn off the DC main circuit breaker and disconnect the power terminal
block cable.
• Before doing the following, disconnect all power:
• Working on or near power supplies
• Installing or removing a router chassis or network processor module
• Performing most hardware upgrades
• Never install equipment that appears damaged.
• Carefully examine your work area for possible hazards, such as moist floors, ungrounded power extension
cables, and missing safety grounds.
• Never assume that power is disconnected from a circuit; always check.
• Never perform any action that creates a potential hazard to people or makes the equipment unsafe.
• If an electrical accident occurs, proceed as follows:
• Use caution, and do not become a victim yourself.
• Turn off power to the router.
• If possible, send another person to get medical aid. Otherwise, determine the condition of the victim,
• Determine whether the person needs rescue breathing or external cardiac compressions; then take
In addition, use the following guidelines when working with any equipment that is disconnected from a power
source, but still connected to telephone wiring or network cabling:
• Never install telephone wiring during a lightning storm.
Cisco NCS 560-4 Router Hardware Installation Guide
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and then call for help.
appropriate action.
Preparing for Installation