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Electrical Equipment Guidelines
Warning
rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and
can cause serious burns or can weld the metal object to the terminals.
Warning
removed to de-energize the unit.
Follow these guidelines when you work on equipment powered by electricity.
•
Locate the emergency power-off switch for the room in which you are working. Then, if an
electrical accident occurs, you can act quickly to power off the equipment.
•
Before working on the system, unplug the power cord.
•
Disconnect all power before doing the following:
— Installing or removing a chassis
— Working near power supplies
Warning
ground during normal use.
Warning
disconnected last.
•
Do not work alone if potentially hazardous conditions exist.
•
Never assume that power is disconnected from a circuit. Always check.
•
Look carefully for possible hazards in your work area, such as moist floors, ungrounded power
extension cables, frayed power cords, and missing safety grounds.
•
If an electrical accident occurs, proceed as follows:
— Use caution; do not become a victim yourself.
— Power off the system.
— If possible, send another person to get medical aid. Otherwise, assess the condition of the
— Determine if the person needs rescue breathing or external cardiac compressions; then take
Warning
Ensure that a fuse or circuit breaker no larger than 120 VAC, 15A U.S. (240 VAC, 10A international)
is used on the phase conductors (all current-carrying conductors).
In addition, use the guidelines that follow when working with any equipment that is disconnected
from a power source, but still connected to telephone wiring or other network cabling.
•
Never install telephone wiring during a lightning storm.
•
Never install telephone jacks in wet locations unless the jack is specifically designed for wet
locations.
•
Never touch uninsulated telephone wires or terminals unless the telephone line has been
disconnected at the network interface.
•
Use caution when installing or modifying telephone lines.
Before working on equipment that is connected to power lines, remove jewelry (including
This unit might have more than one power supply connection. All connections need to be
This equipment is intended to be grounded. Ensure that the host is connected to earth
When installing the unit, the ground connection must always be made first and
victim and then call for help.
appropriate action.
This product relies on the building's installation for short-circuit (overcurrent) protection.
Installing Field-Replaceable Units in Cisco 7100 Series VPN Routers
Electrical Equipment Guidelines
3
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