| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a wiring pipe material that grounds a metal switch box 1 easily. <P>SOLUTION: This wiring pipe material A, the wall 1 of which is formed in a corrugated shape by making crest portions 2 and trough ones 3 continue alternately, protects cables including electric wires or optical fibers passed through the pipe. A passage 5, through which at least a grounding wire 4 consisting of bare wires or coated wires is passed, is formed integrally with the pipe wall 1 in a pipe line. Also, the passage 5 is formed so as to be opened to outside at the trough portions 3 and to expose a part of the circumferential surface of the grounding wire 4 from the openings. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
