This product requires short-circuit (overturned) protection, to be provided as part of the building installation.
Install only in accordance with national and local wiring regulations. Statement 1045
Warning
When installing or replacing the unit, ensure the ground connection first and disconnected last. Statement
1046
Warning
When you connect or disconnect the power and/or alarm connector with power applied, an electrical arc can
occur. This could cause an explosion in hazardous area installations. Be sure that all power is removed from
the switch and any other circuits. Be sure that power cannot be accidentally turned on or verify that the area
is nonhazardous before proceeding. Statement 1058
Warning
This equipment is intended to be grounded to comply with emission and immunity requirements. Ensure that
the switch functional ground lug is connected to earth ground during normal use. Statement 1064
Warning
Installation of the equipment must comply with local and national electrical codes. Statement 1074
Warning
When working on equipment that is powered by electricity, follow these guidelines:
• Locate the room’s emergency power-off switch. If an electrical accident occurs, you know where to
quickly turn off the power.
• Before starting work on the system, turn off the DC main circuit breaker and disconnect the power
terminal block cable.
• Disconnect all power when:
• Working on or near power supplies
• Installing or removing a device 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 and you are uninjured:
• Use caution to avoid injuring yourself.
• Turn off power to the device.
Cisco NCS 540 Router Hardware Installation Guide
4
Safety Warnings
Safety with Electricity