Installation guide

Site Preparation
BlackDiamond 20808 Switch Hardware Installation Guide
40
Calculating Volt-Amperage Requirements
To determine the minimum volt-amperage requirements for your UPS:
1 Locate the voltage and amperage requirements for each piece of equipment. These numbers are
usually located on a sticker on the back or bottom of your equipment.
2 Multiply the numbers together to get Volt-Amps (VA):
VA = Volts x Amperes
3 Add together the VA from all the pieces of equipment to find the total VA requirement.
To determine the minimum volt-amperage requirements for your UPS, we recommend that you add
30% to the total.
UPS Transition Time
Transition time is the time that is necessary for the UPS to transfer from utility power to full-load
battery power. For Extreme Networks products, a transition time of less than 20 milliseconds is required
for optimum performance.
Evaluating and Meeting Cable Requirements
This section describes requirements for the cable you should use when installing your network
equipment. It includes:
● Cabling Standards
● Cable Labeling and Record Keeping
● Installing Cable
● RJ-45 Connector Jackets
● Radio Frequency Interference
Cabling Standards
Extreme Networks recommends using the Building Industry Consulting Service International (BICSI)
Registered Communications Distribution Designer (RCDD), which is globally recognized as a standard
in site planning and cabling. For information, go to:
http://www.bicsi.org
Cable Labeling and Record Keeping
A reliable cable labeling system is essential when planning and installing a network. Maintaining
accurate records helps you to:
● Relocate devices easily.
● Make changes quickly.
● Isolate faults in the distribution system.
● Locate the opposite end of any cable.
● Know the types of network devices that your cabling infrastructure can support.