This product requires short-circuit (overcurrent) protection, to be provided as part of the building
installation. Install only in accordance with national and local wiring regulations.
Statement 1045.
Warning
Interference Considerations
When wires are run for any significant distance in an electromagnetic field, interference can occur between
the field and the signals on the wires. This fact has two implications for the construction of plant wiring:
• Bad wiring practice can result in radio interference emanating from the plant wiring.
• Strong EMI, especially when it is caused by lightning or radio transmitters, can destroy the signal drivers
and receivers in this equipment, and can even create an electrical hazard by conducting power surges
through lines and into equipment. (Review the safety warnings.)
To predict and remedy strong EMI, you may also need to consult experts in radio frequency interference
(RFI).
Note
If wires exceed recommended distances, or if wires pass between buildings, give special consideration to the
effect of a lightning strike in your vicinity. The electromagnetic pulse caused by lightning or other high-energy
phenomena can easily couple enough energy into unshielded conductors to destroy electronic devices. If you
have had problems of this sort in the past, you may want to consult experts in electrical surge suppression and
shielding.
Electrical Equipment Guidelines
• Before beginning any procedures requiring access to the chassis interior, locate the emergency power-off
switch for the room in which you are working.
• Disconnect all power and external cables before moving a chassis.
• Do not work alone in potentially hazardous conditions.
• Never assume that power has been disconnected from a circuit; always check.
• Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.
• Carefully examine your work area for possible hazards such as moist floors, ungrounded power extension
cables, and missing safety grounds.
Unpacking and Verifying Shipping Contents
Save the original Cisco box and packaging in which your equipment was sent and received in.
Note
Before you begin
Read the safety guidelines and review the electrical safety and ESD-preventive guidelines.
Cisco Converged Broadband Routers Hardware Installation Guide
50
Prepare to Install
Electrical Equipment Guidelines