Straight Horizontal Cable Runs

Rollers are generally placed into the trench to prevent the LV-HV cable from incurring damage to the sheath from trench debris or aggregate. The spacing of cable rollers depends on the cable type being installed and the pulling tension along the route.

A leading roller should be used to support the cable over the entire drum width immediately before being fed or pulled into the trench. Slide corner rollers are used on bends and “hoop” type straight cable rollers along horizontal cable run sections.

Trench rollers available to handle up to 125mm diameter cables for standard LV, 11kV and 33kV cable pulls into underground trench – narrow trench rollers with 76mm diameter available for LV armoured (XLPE SWA) applications.

Rollers with inverted skid plates can be used to prevent the cable rising into obstructions.

At cable duct entries as bell mouth should be attached at each end with rollers positioned to give central access into the bell mouth.