STANDARD RECOMMENDED PROCEDURE 003-873 | ISSUE 2 | APRIl 2016 | PAGE 15 OF 18
9 .4 Install Strain-relief Hardware
If at least 10 m (33 ft) of outside plant cable is routed within an environmentally controlled
building where temperature fluctuation is minimal, securing the cable sheath is adequate strain-
relief.
Step 1:
Place hose clamp over the cable and strain-relief bar 18 mm (0.75 inch) below the
sheath end. Center the sheath retention grip on the opposite side of the cable from
the hose clamp tensioning body (Figure 21).
IMPORTANT:
When using armored cable, install strain-relief bracket(s) to the opposite side (180
degrees) from the location of the grounding clamp. Install the hose clamp and bracket
25 mm (1 inch) from the end of the cable sheath to prevent the retention grip from
overlapping the ground hardware.
Step 2:
If there is a central member
present, install the central
member restraint clip as shown in
Figure 22:
•
Trim the central member
flush with the bottom of the
restraint clip.
•
Insert the restraint cap
threaded stud through the
hole in the restraint clip,
capturing the central member
between the two.
•
Wrap the aramid yarn, if
present, twice in a clockwise
direction around the threaded
stud.
•
Install a washer and a nut.
Step 3:
Tighten the hose clamp to secure the cable(s) to the strain-relief bar.
Step 4:
Tighten watertight fitting.
IMPORTANT:
The watertight fitting must be tightened to prevent water intrusion into the enclosure.
KPA-0900
Sheath
Retention
Grip
Hose Clamp
Strain-relief Bracket
Braided Tubing
Figure 21
— Attach Hose Clamp to Strain-relief Bar
Install Central Member Restraint Clip
1
Position Central
Member Between
Restraint Clip and
Restraint Cap
2
3
Install
Central
Member
Restraint Cap
KPA-0901
Figure 22
— Strain-relieve Composite Central Member
