| 摘要 |
PURPOSE:To prevent an equipment from being deteriorated or damaged due to water infiltration, by having an aperture narrower than the opening section of an box, in the wiring apparatus containing box embedded in a floor, and by setting a cover with the outer peripheral section lower than the aperture. CONSTITUTION:On a concrete substrate 1, block members 2 having leg sections 2a are arranged vertically and horizontally to form a double floor, and floor members 3 are fitted. In place of a part of the block members 2, a box 11 having an opening section at the upper section is set. The opening section has a cap 20 which can be opened or closed, and a bearing plate 21 is engaged with the flanges 15 of the box 11. A cover 26 having an aperture 26b with an area less than that of the cap 20 of the opening section, on the lower side of the cap 20 is fitted on the projected sections 17 of the box 11 so that the peripheral section of the cover 26 may be lowered. The cap 20 is opened, and the handle 28a of a breaker 28 projected from the aperture 26b is operated. As a result, the breaker 28 is easily operated, and an electrical apparatus is prevented from being damaged due to water infiltration through the floor surface. |
