| 摘要 |
After winding several cables(10) as a zigzag coil shape, it is put in the pipes(20)(30) for a wiring protection with a flexible or a straight line shape. A bent interval from an underground which is the interval between manholes, and a terminal box to a wall socket, the pipes(20)(30) in which a cable of a coil shape is put are laid in the underground, a building wall, or a ceiling, and so on, after a straight line or a flexible shape of a pipe for a wiring protections(20)(30) are cut off with the interval of the building wall.
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