Cisco 4507re Manual

  
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Catalyst 4500 E-Series Switches Installation Guide
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Chapter 2      Preparing for Installation
Site Requirements
Altitude
Operating a system at high altitude (low pressure) reduces the efficiency of forced and convection 
cooling and can result in electrical problems related to arcing and corona effects. This condition can also 
cause sealed components with internal pressure, such as electrolytic capacitors, to fail or perform at 
reduced efficiency. Each system is rated to operate at...

  
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Catalyst 4500 E-Series Switches Installation Guide
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Chapter 2      Preparing for Installation
Site Requirements
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...

  
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Catalyst 4500 E-Series Switches Installation Guide
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Site Requirements
•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...

  
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Catalyst 4500 E-Series Switches Installation Guide
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Chapter 2      Preparing for Installation
Site Requirements
NoteIn all situations, grounding practices must comply with Section 250 of the National Electric Code (NEC) 
requirements or local laws and regulations. A 6 AWG grounding wire is preferred from the chassis to the 
rack ground or directly to the common bonding network (CBN). The equipment rack should also be 
connected to the CBN with 6 AWG grounding wire.
Table 2-1 Grounding...

  
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Catalyst 4500 E-Series Switches Installation Guide
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Chapter 2      Preparing for Installation
Site Requirements
NoteIn installations where FXS modules are installed, supplemental grounding is required.
NoteAlways ensure that all of the modules are completely installed and that the captive installation screws 
are fully tightened. In addition, ensure that all I/O cables and power cords are properly seated. These 
practices are normal installation practices and must be followed in all...

  
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Catalyst 4500 E-Series Switches Installation Guide
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Chapter 2      Preparing for Installation
Site Requirements
•Use approved power cables only. You have been provided with one or more power cables with your 
chassis power supply that are intended for use in your country, based on the shipping location. 
Should you need to purchase additional power cables, ensure that they are rated for the product and 
for the voltage and current marked on the product’s electrical ratings label. The...

  
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Catalyst 4500 E-Series Switches Installation Guide
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Chapter 2      Preparing for Installation
Site Requirements
After you install the system ground lug, follow these steps to correctly attach the ESD wrist strap:
St e p 1Attach the ESD wrist strap to bare skin as follows:
a.If you are using the ESD wrist strap supplied with the FRUs, open the wrist strap package and 
unwrap the ESD wrist strap. Place the black conductive loop over your wrist and tighten the strap 
so that it makes good...

  
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Catalyst 4500 E-Series Switches Installation Guide
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Chapter 2      Preparing for Installation
Power Requirements
Power Requirements
When preparing your site for the switch installation, follow these requirements:
•In systems configured with two power supplies, connect each of the two power supplies to a separate 
input power source. If you fail to do this task, your system might be susceptible to total power failure 
due to a fault in the external wiring or a tripped circuit breaker....

  
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Catalyst 4500 E-Series Switches Installation Guide
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Chapter 2      Preparing for Installation
Power Requirements
•If you are using a 200/240 VAC power source in North America, the circuit must be protected by a 
two-pole circuit breaker.
•The source AC outlet must be within 6 feet (1.8 meters) of the system and should be easily 
accessible.
•The AC power receptacles used to plug in the chassis must be the grounding type. The grounding 
conductors that connect to the receptacles should...

  
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Catalyst 4500 E-Series Switches Installation Guide
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Chapter 2      Preparing for Installation
Cabling Requirements
Cabling Requirements
CautionThe intrabuilding port(s) of the equipment or subassembly is suitable for connection to intrabuilding or 
unexposed wiring or cabling only. The intrabuilding port(s) of the equipment or subassembly must not 
be metallically connected to interfaces that connect to the Outside Plant (OSP) or its wiring. These 
interfaces are designed for use as...