CALL WIRE FOR ELECTRIC WIRING

摘要

PURPOSE:To contrive to improve wire-passing workability by attaching a hard spherical having a diameter larger than that of a stranded wire to the pipe- inserting part of the stranded wire. CONSTITUTION:The basic structure of a call wire 1 for electric wiring is, e.g. a stranded wire 2 composed of three synthetic-resin monofilaments. Further, a hard spherical 5 having a diameter larger than that of the stranded wire 2 is fixed on the pipe-inserting part 4 side of the stranded wire 2. In this case, the hard spherical 5 desirably has a diameter ranging from 1.5 times as long as the diameter of the stranded wire 2 to 95% and less of the inner diameter of a pipe to be inserted. Thus, slip characteristics of the pipe-inserting part 4 are improved and the wire-passing resistance can be made small so that it is possible to improve wire-passing workability particularly at the time of letting the wire pass through a complicated electric piping having a plurality of continuous bents.