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Chapter 2 Preparing for Installation
Power Source Interruptions
If the wires exceed the 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
Shock and Vibration
Catalyst 4948E and Catalyst
Power Source Interruptions
Systems are especially sensitive to variations in voltage supplied by the AC power source. Overvoltage, undervoltage, and transients (or spikes) can erase data from memory or even cause components to fail. To protect against these types of problems, power cables should always be properly grounded. Also, place the system on a dedicated power circuit (rather than sharing a circuit with other heavy electrical equipment). In general, do not allow the system to share a circuit with any of the following:
•Copy machines
•Air conditioners
•Vacuum cleaners
•Space heaters
•Power tools
•Teletype machines
•Laser printers
•Facsimile machines
•Any other motorized equipment
Besides these appliances, the greatest threats to a system power supply are surges or blackouts that are caused by electrical storms. Whenever possible, turn off the system and any peripherals, and unplug them from their power sources during thunderstorms. If a blackout
System Grounding
You must install a
Catalyst 4948E and Catalyst
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