Electrical conduit junction boxes

An electrical conduit junction box, the box including a body defining an interior, the body including an edge attachment formation which defines a socket receiving aperture, the box including a socket, the socket including a socket attachment formation, the box being movable from a disassembled condition in which the socket is separate to the body and an assembled condition in which the socket is located in the socket receiving aperture and the socket attachment formation engages the edge attachment formation to secure the socket to the body;

• the socket attachment formation defines a groove, which, in the assembled condition, receives the edge attachment formation;
• the groove has a cross-sectional area and a length, and the cross-sectional area is reduced in at least one location along the length;
• the socket is movable between an insertion orientation and a locked orientation and in the assembled condition is in the locked orientation;
• the box is arranged so that, to move to the assembled condition from the disassembled condition, the socket must be inserted into the socket receiving aperture in the insertion orientation and then rotated to the locked orientation;
• in moving from the disassembled condition to the assembled condition, the socket moves from the insertion orientation to a maximum friction orientation and then to the locked orientation;
• the socket attachment formation includes a pair of interference formations, each of which defines one of the reduced cross-sectional area locations and which both together contact the edge attachment formation at the maximum friction orientation;
• the socket receiving aperture has a shape;
• the socket receiving aperture shape includes a pair of straight edges, which are arranged in parallel at opposite sides of the socket receiving aperture shape and are spaced apart by an aperture width;
• the interference formations extend diametrically oppositely away from each other;
• the interference formations have a diametrical width;
• the diametrical width of the interference formations is greater than the aperture width.