Large cables also require longer loop bottoms than smaller cables. The reason for having two different sizes of expansion loops is to allow both small and large cables to safely move within their recommended bend radii. There are currently two lengths of expansion loops in use. One is for cables with a diameter of 0.75 inch or less, and the other is for cables with diameters larger than 0.75 inch. An expansion loop can be formed using either a mechanical bender or a bender board.
Mechanical benders hang from the strand by hooks and use ratchet pressure to bend and form the loop.
It is lifted into place between the strand and the cable and held there by hand. The cable is then manually pressed against the bender board to form an expansion loop. It is strongly recommended that mechanical benders be used because they produce more consistently formed loops. To form the loop, attach the mechanical bender to the strand at the appropriate location. Place the cable in the bender and form the loop according to the manufacturer s directions.