Cisco ASA 5505 Hardware Installation Manual page 25

Chapter 1 Preparing for Installation
Maintaining Safety with Electricity
Before working on a chassis or working near power supplies, unplug the power cord on AC units;
Warning
disconnect the power at the circuit breaker on DC units. Statement 12
Follow these guidelines when working on equipment powered by electricity:
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Before beginning procedures that require access to the interior of the chassis, 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 turn off the power.
Do not work alone if potentially hazardous conditions exist anywhere in your work space.
Never assume that power is disconnected from a circuit; always check the circuit.
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.
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– Disconnect power from the system.
If possible, send another person to get medical aid. Otherwise, assess the condition of the victim
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and then call for help.
– Determine if the person needs rescue breathing or external cardiac compressions; then take
appropriate action.
Use the adaptive security appliance chassis within its marked electrical ratings and product usage
instructions.
Install the adaptive security appliance in compliance with local and national electrical codes as listed
in the Regulatory Compliance and Safety Information for the Cisco ASA 5500 Series document.
The adaptive security appliance models equipped with AC-input power supplies are shipped with a
3-wire electrical cord with a grounding-type plug that fits only a grounding-type power outlet. Do
not circumvent this safety feature. Equipment grounding should comply with local and national
electrical codes.
The adaptive security appliance models equipped with DC-input power supplies must be terminated
with the DC input wiring on a DC source capable of supplying at least 15 amps. A 15-amp circuit
breaker is required at the 48 VDC facility power source. An easily accessible disconnect device
should be incorporated into the facility wiring. Be sure to connect the grounding wire conduit to a
solid earth ground. We recommend that you use a closed loop ring to terminate the ground conductor
at the ground stud. The DC return connection to this system is to remain isolated from the system
frame and chassis.
Other DC power guidelines are listed in the Regulatory Compliance and Safety Information for the
Cisco ASA 5500 Series document.
Cisco ASA 5500 Series Hardware Installation Guide
Safety Recommendations
1-3