| 摘要 |
The type of electrical box involved is pref. rectangular and located externally, comprising a base plate with a centrally positioned column. It has a cover, in the side walls of with apertures permitting the use of an unloading unit for different alternative positioning inside or outside of the side walls. The unit pref. comrpises covers which can be adjusted and fixed relatively to each other by screws. A base plate is provided with which the first of the covers is connected, and from the plate extends a fixture arm with holes at alternating distances from the covers to work in conjunction with a fixture component in the coupling box. To esnure the correct positioning of the strain relieving unit relatively to a selected box wall, the walls of the fixture holes have four recesses corresp. to one or more guiding ridges on the fixture component. |
