Distribution Rack Requirements; Protective Grounding For The Rack; Space Requirements For The Rack - 3Com CoreBuilder 2500 Getting Started Manual

C-2 A C: S R
PPENDIX ITE EQUIREMENTS AND
Be sure that the wiring closet floor is flat and
level. If you are using distribution racks and the
floor is not level, bolt the racks to the floor to
prevent them from tipping over.
Be sure that each wiring closet has a suitable
ground. Ground all metal racks, enclosures,
boxes, and raceways in the closet.
Use AC power, 15-amp service receptacles, type
N5/15 or NEMA 5-15R for 120 VAC and the
other system specifications shown in Appendix A.
Be especially sure to meet all system
environmental requirements in Appendix A, such
as ambient temperature and humidity.
Be sure that the ventilation in the wiring closet is
adequate to maintain a temperature below 104˚
F (40˚ C).
Install a reliable air conditioning and ventilation
system if you plan to have two or more
CoreBuilder 2500 systems in a single wiring
closet.
During nonbusiness hours, guard against the
ventilation being shut down while a CoreBuilder
2500 system remains powered up; otherwise,
the equipment might overheat.
S C
AFETY ODES

Distribution Rack Requirements

If you plan to mount your CoreBuilder 2500 systems
in a distribution rack, your rack should meet the
basic mechanical and space requirements described
in this section.

Protective Grounding for the Rack

Proper distribution rack grounding ensures that
voltages induced into wiring by lightning or other
disturbances are directed to ground. Normally, you
use a distribution rack grounding kit and a ground
conductor that is carried back to earth or to another
suitable building ground. To order the grounding kit,
contact your sales representative.

Space Requirements for the Rack

Provide enough space in front of and behind the
system so that you can service it easily. Allow a
minimum of 30 inches (76 centimeters) between the
rack and any wall behind or in front of it. Extra
room on each side is optional. See Figure C-1.