Section BXM‐301‐10H‐20A
030‐101901 Rev. A
R
11
1608IARA
Figure 16. Ground Plate of Boxer‐30 Cabinet
ESD jack
Ground
Lug
Earth
8 sets of posts for
bonding cables
and equipment
9.
Drill bottom mounting holes.
Drill appropriately‐sized pi
lot holes, slightly smaller than the width and depth of the
bolts, for the lower mounting bracket. Use a minimum of
three bolts.
Do not drill the holes too large.
10.
Install bottom mounting bolts.
Insert and drive all bottom
bolts completely in to their final seated position. Finish
the installation by verifying all bolts are firm and snug.
11.
Determine next step.
If ground, power, and communica
tions cables and internal equipment will not be connected,
installed or mounted at this time, proceed to the next step
to finalize the cabinet installation. If ground, power, and
communications cables and internal equipment will be
connected, mounted, and powered‐up at this time, skip
the next step and proceed to Paragraphs 3.7 through Para
graph 3.16 for those procedures.
12.
Close up cabinet and clean the site.
Close the Boxer‐30
door, and lock it using a can wrench or 216 tool and an op
tional padlock. Pick up any tools and materials at the
installation site, and clean the site of any trash or debris.
‐ NOTE ‐
Always follow local safety precautions and standard operating
procedures for grounding the equipment when installing, up
grading, repairing or maintaining equipment. Any instructions or
information contained herein is subordinate to local codes, oper
ating procedures or practices.
3.7
Making Ground Connections
Eight sets of bond/ground posts, a ground lug, and an ESD jack
are provided on a ground plate on the interior floor of the cabi
net (see Figure 16). The posts are provided to bond both
network and customer equipment or communications cables.
An external earth ground rod or wire (#6 AWG) must enter the
cabinet and be connected to the ground lug located on the inte
rior ground plate.
Make all ground connections prior to any
telecommunications cable connections.
1.
Locate or establish an external earth ground.
Find or
create an external and appropriate earth ground, per com
pany practice and local codes.
2.
Remove a knock‐out for the earth ground wire.
Per compa
ny practice, determine which cabinet knock‐out hole
location should be used for earth ground wire entrance (a
small forward knock‐out is recommended). If not already
removed, remove the selected knock‐out.
3.
Install a rubber grommet or liquid‐tight fitting.
Install ei
ther conduit and an appropriate and liquid‐tight fitting or
a rubber grommet in the knock‐out hole.
4.
Route ground wire through knock‐out hole.
Run the ap
proved ground wire through the grommet or conduit to
the ground lug.
5.
Connect earth ground wire.
Connect the earth ground
wire to the #6 AWG ground lug on the ground plate, per
company practice.
6.
Seal the earth ground entrance hole.
Depending on the
type of fitting or grommet used, it may be necessary to seal
the ground wire entrance hole, as stated in the note below.
‐ NOTE ‐
To improve the integrity of the cable entries seal when rubber
grommets are used, a water‐proof foam or silicone sealant
should be used on the interior side of the cabinet, around the ex
posed grommet and cable entry.
7.
Ground installed equipment and cables.
As each cable and
piece of equipment is mounted inside the cabinet (in the
following sections), connect it to a ground lug or post pro
vided on the ground plate, per company practice.
8.
Use ESD ground jack.
Whenever installing equipment or
performing system testing or maintenance, use the pro
vided ESD ground jack also provided on the cabinet's
interior ground plate.
3.8
Making Fan Power Connections
To power the factory‐prewired Boxer‐30 cooling fans, an exter
nal ‐48VDC (4.9A) power source must be connected to the
power cable of the heat exchanger.
‐ NOTE ‐
Ensure that the power source has sufficient power to support the
235 watts required to operate the Boxer‐30 fans plus the power
required for the telecommunications equipment that is being
installed in the cabinet.
‐ NOTE ‐
Boxer requires ‐48VDC @ 4.9A to operate.
Connecting ‐48VDC Fan Power
Follow the steps below to connect ‐48VDC fan power from a
‐48VDC power source to the blunt‐cut power cord for the heat
exchanger compartment. Always follow local codes and com
pany practices.
1.
Verify the power source.
Verify the power source is in good
working condition.
2.
Remove or disable power.
Disable power at the power
source before proceeding (power is re‐applied later).
3.
Remove knock‐out for power wires.
Select the best knock‐
out for power cable ingress and egress, and remove the
knock‐out per Paragraph 3.5, and prepare any grommet
placement and conduit fittings per company practice.
4.
Route wires into cabinet.
Extend and route the DC wires
from the ‐48VDC power source into the Boxer‐30 cabinet
through the knock‐out hole. Allow enough wire to reach
an optional field‐provided rectifier, with sufficient slack.
5.
Strip power wires.
Remove approximately 5” of jacket
from the power cord, then strip off approximately 3/16”
from the end of the wires for DC power.
