Total Access
®
3000/3010 System Manual
6TAPRP401-1E
TOTAL ACCESS 3000/3010
PREP-401
Page 2 of 10
© 2002, ADTRAN, Inc.
Adding 4 inches for this bottom heat baffle yields the following equation for
the total vertical space needed for N shelves:
• Vertical Space in Inches = (10" x N) + 4"
So, for example, a stack of three shelves would occupy 34 inches of vertical
space and consist of three shelves and four heat baffles.
1.2.1.2 Use of Horizontal Spacers in a NEBS Lineup
In the case that four or more Total Access 3000/3010 shelves are to be
installed in the same bay, you should add 5-inch horizontal aisle spacers on
both sides of the bay to accommodate the high wire density of the shelves
and to allow additional ventilation space for any high-power applications
which might be deployed in the shelves.
1.2.2 Fitting the Shelf into MTU and RT Applications
For individual shelf applications, the Total Access 3000/3010 occupies 6 inches of
rack space. When the shelf is being used as a DSLAM, it is recommended that it be
used in conjunction with the heat baffle and fans. This adds 4 inches of rack space. All
applications should be implemented where there is adequate heat dissipation and
available power.
1.3 Electrical Considerations
The Total Access 3000/3010 shelf supports either single-feed or dual-feed -48 Vdc
power inputs. The use of single or dual feeds should be specified by the Site Engineer
and power wiring should be run accordingly.
1.3.1 Power Wiring and Fusing
-48 V and -48 V return connections should be provided from the fuse panel using
insulated 10 AWG wire for 20 Amp fuses; 12 AWG wire should be used for 10 or 15
Amp fuses. A separate wire should be run from the fuse panel for each -48 V input and
for each -48 V return. Power wire with red insulation is recommended for the -48 V
feeds and power wire with black insulation is recommended for the -48 V return feeds.
If a shelf is to be equipped with a fan unit, then separate -48V and -48V return wiring
is required for the fan unit. 18 AWG power wire should be run from the fuse panel to
the fan unit, following the same color scheme that was used to wire the shelf. If the
shelf is wired for dual-feed power, then the fan unit should also be dual-feed powered
from the same two supply sources.
Each shelf should be furnished with a separate 20 Amp fuse on each power feed. The
fan unit should be furnished with a separate 1 Amp fuse on each power feed.
1.3.2 Frame Ground
Each Total Access 3000/3010 shelf requires a connection to frame ground using 6
AWG ground wire. A separate grounding wire from the bay itself or from the bay’s
grounding bar should be provided for grounding each shelf. Wire with green insulation
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