These instructions provide procedures for installing cable clamps in a stacked
(Three Tier) arrangement. Up to three cable clamps can be assembled together for
securing up to three cables in a Fiber Entrance Cabinet (FEC).
Revision History
ISSUEDATEREASON FOR CHANGE
105/1997Original.
105/1999Updated to current format (1999).
106/2008Updated to current format (2007).
Rev B April 2018Updated to CommScope format and contact info updated.
Related Publications
Listed below are related manuals and their publication numbers. Publications can be
downloaded from the CommScope web site at
http://www.commscope.com/SupportCenter
The Three Tier Clamp kit (OSP-CLPFEC-LG) is designed for use in the Fiber Entrance
Cabinet (FEC). The FEC uses a water resistant grommet with three cutouts to
accommodate multiple and various sized cables in each entry port. The OSPCLPFEC-LG kit covers cable with outside diameters from 0.80 inch to 1.2 inches (20
mm to 30 mm). Table 1 lists the kit components.
Table 1. OSP-CLPFEC Kit Components
ITEMQUANTITY
Split Grommets (0.80, 0.90, 1.00 and 1.10 inch) 3 each size
Clamp Yokes6
Male/Female bolt6
Spacer bracket2
The OSP-CLPFEC LG kit uses special male/female
bolts and spacer plates to provide
for three tier stacking. Male/female bolts thread into each other to accomplish the
stacking. The spacer plates have two cutout slots the size of the bolt head. The
slots keep the bolts from turning as the next bolt is threaded into it.
Figure 1 shows the kit components in an exploded view.
Figure 1. Three-Tier Cable Clamp Exploded View
Figure 2 shows the kit components in the configurations used for one
The cable clamps are installed after the cable ground clamp and moisture blocking
has been completed. The cable entry port grommet is removed for the ground
clamp and moisture blocking procedures. After those operations are complete,
install the cable clamps as described below.
2.1 One Cable Per Entry Port With Possible Future Cable Addition
(Figure 2A)
Use this procedure to install the first cable.
1. Cut out an appropriate size opening in the grommet that is the closest in size
the outside diameter for the cable being installed.
to
2. Insert the grommet into the cable entry
slot. Start with the top groove first
and press the grommet into the slot.
3. Attach a set of clamp yokes to the cable termination and grounding plate with
male/f
4. Route the cable through the hole cut in
emale bolts. Thread in the top bolt only at this time. Do not tighten.
the grommet and into the cable clamp.
Use split grommets as required to assure a tight fit. Thread in the lower bolt
and tighten both bolts.
5. Connect the ground straps to the cable terminating and grounding pl
shown in Figure 3.
1. Cut out the appropriate size openings in the grommet that
to the outside diameter for the cable being installed.
2. Attach the second set of clamp yokes to the clamp
ADCP-93-080 • Rev B • April 2018
is the closest in size
already in position.
a. Place the spacer bracket over the bolt heads of the fi
bolt heads are aligned to allow the bracket to slide over the bolt heads.
b. Thread a male/female bolt through the top holes of the second set of clamp
yokes
this time.
3. Route the cable through the hole cut in
Use split grommets as required to assure a tight fit. Thread the lower bolt
through the bottom holes of the clamp yokes. Check that the spacer bracket is
in place and tighten both bolts.
into the top male/female bolt of the first clamp. Do not tighten at
the grommet and into the cable clamp.
Note: Do not remove the spacer bracket after the bolts are tightened.
4. Connect the ground straps to the cable terminating and grounding plate as
shown in Figure 3.
2.3 Three Cables Per Entry Port (Figure 2C)
Use this procedure to install a third cable.
1. Cut out the appropriate size openings in the grommet that
to the outside diameter for the cable being installed.
2. Attach the third set of clamp yokes to the clamp already in position.
a. Place the spacer bracket over the bolt heads of
the bolt heads are aligned to allow the bracket to slide over the bolt heads.
rst clamp. Ensure the
is the closest in size
the second clamp. Ensure
b. Thread a male/female bolt through the top holes of the third set of clamp
yokes into
this time.
3. Route the cable through the hole cut in
Use split grommets as required to assure a tight fit. Thread the lower bolt
through the bottom holes of the clamp yokes. Check that the spacer bracket is
in place and tighten both bolts.
the top male/female bolt of the second clamp. Do not tighten at
the grommet and into the cable clamp.
Note: Do not remove the spacer bracket after the bolts are tightened.
4. Connect the ground straps to the cable terminating and grounding plate as