| 摘要 |
<p>A hydrological barrier plate (12) for in-grade light fixture housings (14) and a housing (14) for use with light fixtures (10, 56, 116) to prevent water entry into the water sensitive compartments of the light fixture. The barrier plate (12) has a plate body (70) with an opening (96) in which is sealably disposed an anti-syphon wire pass-through valve (94) for electrically connecting the components on one side of the barrier plate (12) with the wires (48) in the junction box (16) on the opposite side of the barrier plate (12). The barrier plate (12) is sealed around its outer edge against the housing wall. The pass-through valve (94) is configured to prevent water from wicking along the wires and to prevent water from passing around the valve. The barrier plate (12) is installed without tools and an effective seal is easily obtained. Using the barrier plate (12), water is prevented from migrating between the junction box (16) and the primary housing compartments (18) of the housing (14).</p> |
