PROBLEM TO BE SOLVED: To provide a system for mounting an electric wire, capable of easily changing a position of a column in which an electric wire supporting tool can be quickly fixed to the column, which can be easily extended again even when the electric wire is loosed, and requires to set the length of the electric wire without being easily rotated to a column axial circumference even when a tension is applied to the electric wire, and being leaked in the case of wetting with water on a rainy day.SOLUTION: A system for mounting an electric wire is fixed to a column 60 of an electric wire supporting tool by sandwiching the column with clamping pieces 21 and 22 and hooking a roller 42 of a fastener 40 to an end part of the clamping piece 22. The column includes a shape that the friction of a concave part of the electric wire supporting tool is larger, and the electric wire supporting tool dose not easily rotate around an axis of the column. An insulator 30 is arranged upstanding. A lower part is formed in a cavity having an opened lower surface, and the leakage does not occur even on a rainy day. A disc-like part of the insulator includes a plurality of cutting parts 34, and an electric wire 70 can be engaged to between the plurality of cutting parts with looseness. Thus, the electric wire can be easily extended again when it is loosed, and a position of the column to be required for being more extended can be easily changed.SELECTED DRAWING: Figure 6COPYRIGHT: (C)2018,JPO&INPIT【課題】電線支持具が支柱に迅速に固定でき、電線に引っ張り力が加わっても容易に支柱軸周りを回転せず、雨天時に水濡れした場合も漏電せず、電線が弛んでも容易に張り直すことができ、電線をより長くすることが必要な支柱の位置変更が容易にできる電線張設システムを提供する。【解決手段】電線支持具の支柱60への固定は、挟持片21と22で支柱を挟み留め具40のローラー42を挟持片22の端部に掛けることにより行う。支柱は電線支持具の凹部との摩擦が大きくなる形態を有しており、電線支持具は容易に支柱の軸の周りを回転しない。碍子30は直立しており、下部は下面が開いた空洞となっており雨天時も漏電は起こらない。碍子の円盤状部分は複数の切り込み34を有し、電線70を複数の切り込みの間に弛みを持たせて系止できるので、電線が弛んだ場合容易に張り直すことができ、電線をより長くすることが必要な支柱の位置変更が容易にできる。【選択図】図6
