| 摘要 |
PURPOSE:To avoid noises in a signal line due to the power line by installing an electric wire protector covering an electric wiring onto the top face of the beam of a ceiling and mounting the electric wiring protector while mutually separating a power-line protective region and a signal conductor protective region. CONSTITUTION:An electric wire protector 21 made of a steel plate covering an electric wiring 20 is set up onto the top face of the beam 15 of a ceiling in a building unit. Holding members 22 capable of holding the electric wirings 20 between the electric wire protector 21 and the beam 15 is fitted onto the internal surfaces of curved board sections 21B, 21C arranged in a path 19 for the electric wirings in the beam 15 in the electric wire protector 21. A protective region for a power line is demarcated by the holding member 22 of the curved board section 21B and a protective region for a signal line is demarcated by the holding member 22 of the curved board section 21C in the electric wire protector 21, thus mutually separating both protective regions. |
