Comander Perimeter Security System
Engineering and Installation Manual
Page 53 of 72
It is therefore extremely important that where the cable is to pass around fence posts, it
should do so in a smooth and stable curve which keeps it from touching them as a
result of the natural movement of the fence fabric. Sufficient distance should be left
between the post and the closest ties to allow this smooth curve - this distance will
depend on the thickness of the posts ...
A few days after installation the sensor may well droop under its own weight, causing
the loops to rub against the posts, which may in turn cause damage to the cable as the
fence moves. In this situation, the cable should be protected mechanically where it
loops around the post with a small section of FAC, Spirawrap, hosepipe section or tie-
wraps. Alternatively the cable can be p-clipped to the post.
5.3.1.2 Changes in Ground Level
Variations in ground level may cause fence panels to be stepped up or down at support
posts. Smooth bends at the posts ensure that the sensor runs parallel to the ground ...
As detailed above, care should be taken to ensure that these longer loops are smoothly
curved and do not strike or rub against the posts in adverse weather conditions.
To Next Page
Loading...