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WLAN Cable Access Point 6220 NTPM99CA 01 Rel 1.0 Issue 3 Dec 2004
Procedure 1-3
Mounting the APU on the Steel Wire Strand
Action
Step Action
1.
Prior to an installation, check if the strand has the strength to sustain the
weight of the APU or 10 lbs.
Note: During placing the cable, do not exceed the maximum rated pulling
tension of the steel. After the cable has been placed, tension should be
applied to the strand only. Refer to the table of guidelines found in the
current NESC Rules 250-252.
Table 3-1
Strand Tension and limitation
Strand Diagram
inches (mm)
Weight
lbs/ft (kg/m)
Max rated Load
lbs (kg)
0.109 (2.77) 0.032 (0.048) 1800 (816)
0.134 (3.40) 0.048 (0.075) 2680 (1216)
0.188 (4.77) 0.073 (0.109) 3990 (1810)
0.250 (6.35) 0.121 (0.180) 6650 (3016)
Figure 3-6
APU Installation scheme
2. Attach the strand clamp assemblies to the top strand clamp bosses
(mounting surfaces) with a long socket cap screw bolt (Diameter: 5 mm,
Length: 15mm) and lock washers.
3. Slide the wire strand into the clamp module.
4. Tighten the bolts with the power tool that has a hex head socket bit so
that the enclosure cannot come off the strand, while the location can
still be adjusted.
5. Torque the clamp bolts to between 35 and 60 in-lbs (3.9 and 6.8 Nm).