The PVC – covered conductors have been developed primarily to give protection to telecommunication lines which are crossed by power lines and to give protection to the public from low voltage lines in case of accidental contact for short periods.

The PVC – covered power lines have also been found useful in corrosive atmospheres and for preventing faluts due to birds and trees. For such purposes, thickness of covering other than those specified in this catalogue may be used. The conductors are sometimes referred to as "Weather-Resistant Line Wire" and may consist of a single solid wire, or stranded hard-drawn copper conductors (CU) over which a covering has been applied.

The PVC – covered power lines have also been found useful in corrosive atmospheres and for exceed 650 V r. M. S. Between any two conductors or 250 V r. M. S. Between any conductor and earth.