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20 CHAPTER 2: INSTALLING THE ETHERNET POWER SOURCE AND END DEVICES
Choosing a
Suitable Site
The EPS is suitable for an office environment. It can either be
rack-mounted in a standard 19-inch equipment rack (for example, in a
wiring closet or equipment room) or placed free-standing on a desk,
table, or counter. Both the 12-port and 24-port EPS packages (3C10220
and 3C10222 respectively) contain a rack-mounting kit with two
mounting brackets and six screws.
When you select a site for the EPS:
■ Always follow the appropriate configuration practices for Fast
Ethernet, including the 100-meter limit on total cable length.
■ Locate the EPS so that you can connect cables easily.
■ Locate cables away from sources of electrical noise such as:
■ Radios, transmitters, or broadband amplifiers
■ Power lines
■ Fluorescent lighting fixtures
■ Make sure that no water or moisture can enter the EPS case. The unit
is not designed for outdoor use.
■ Make sure that air can flow freely on all sides of the EPS for proper
cooling. 3Com recommends that you provide a minimum of 25 mm
(1 in.) clearance on each side of the unit.
■ If you use more than one EPS and place them on a table or desk, do
not place more than four units in a single stack. If you mount multiple
EPS units in a rack, this limit does not apply.