FIELD: electrical engineering. SUBSTANCE: wiring box is made in the form of cylindrical case with slots. Grooves are provided on inner surface of box. Slots accommodate stops joined together by means of toothed jumper. Stops are arranged so that turning in the screw brings stops together which compresses the jumper. Holes are provided to bring in conductors. EFFECT: improved mechanical design which makes it possible to install box in concrete, brick, and plasterboard walls. 1 dwg
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