Electrical cable restrain device using a double wedge chuck

A chuck for a cable fitting, comprising:

• multiple segments positioned around a central axis, each segment including:
• a first tapered surface on a distal end, wherein the first tapered surface slopes outwardly from the distal end away from the central axis, and
• a second tapered surface on a proximal end, wherein the second tapered surface slopes outwardly from the proximal end away from the central axis;
• and
• multiple joints interposed between the multiple segments, wherein the multiple segments and multiple joints form a ring configured to receive a cable,
• wherein each segment of the multiple segments is configured to receive compressive forces on the first tapered surface and the second tapered surface to force each segment of the multiple segments inwardly toward the central axis, and
• wherein each joint of the multiple joints is configured to collapse inwardly to reduce an inside diameter of the ring.

A cable fitting, comprising:

• a gland nut including a first axial bore, wherein the gland nut includes internal threads along a portion of the first axial bore and a first sloped surface along another portion of the first axial bore;
• a body including external threads configured to receive the internal threads and a second axial bore at a distal end, wherein the body includes a second sloped surface along the second axial bore;
• a chuck, interposed between the gland nut and the body, wherein the chuck includes multiple segments and wherein each segment of the multiple segments includes:
• a distal end tapered surface that matches the first sloped surface,
• a proximal end tapered surface that matches the second sloped surface,
• a seating surface with a shoulder, and
• an inward-facing surface;
• and
• a bushing, configured to seat on the seating surface, the bushing including a third axial bore and a bushing tapered surface that matches the second sloped surface;
• wherein the first axial bore, the second axial bore, the third axial bore, and the chuck are configured to form an axial pathway for a cable.