STANDARD RECOMMENDED PROCEDURE 003-737 | ISSUE 4 | MAy 2015 | PAGE 17 OF 25
10.2.2 Install Grounding Hardware to Armored Cable
Step 1:
Cut a slit into opposite sides of the outer sheath
and armor about 5 cm (2 in) from the end of the
sheath (Figure 3). To do this, score the armor
with a cable knife (being careful not to damage
the inner sheath) and split the sheath by flexing
it.
Step 2:
Position the grounding clamp base plate under
the armor with the stops on the clamp butted
against the outside of the armor and sheath. Tap
the sheath above the ground clamp base to set
the teeth.
IMPORTANT:
When the cable has metallic strength members,
attach the extension bracket as shown in the inset
(p/n UCN-GND-SC20, purchased separately) to the
base plate before installing the top plate.
Step 3:
Position the top plate and lock nut on the outer
sheath over the base plate. Tighten nut to a
torque value of 23 in-lb using a 3/8-in wrench
to drive the teeth on the upper plate into the
sheath.
Step 4:
Wrap the grounding connector and split portion
of the sheath with a few wraps of vinyl tape.
Step 5:
Attach the ring terminal of the ground wire over
the top plate. Add a lock nut and tighten to a
torque value of 23 in-lb (Figure 23).
10.2.3 Secure Metallic Strength Members
Figure 23
Step 1:
Bend metallic strength members over the slots in the extension bracket as shown in
the inset in (Figure 24) and then trim excess strength member.
Step 2:
Wrap the yarn, if present, twice in a clockwise direction around the threaded stud.
Step 3:
Install restraint cap from the strain-relief kit as shown in Figure 24.
Step 4:
Install a washer and nut and tighten securely.
Step 5:
Repeat for other cables, when applicable.
IMPORTANT:
Confirm all buffer tubes are clear of the strength elements prior to securing the restraint
cap.
Figure 24
1
2
3
4
5 cm (2 in)
1
Stop
Base Plate
2
6 cm (2.4 in)
5
3
Extension
Bracket
Top Plate
4
Extension bracket not shown.
Extension bracket not shown.
KPA-0019
Yarn, if present
Metallic
strength
members
Restraint cap
KPA-0899
