Cable gland and methods for grounding a cable

A cable gland comprising:

• a gland body comprising:
• a central axis;
• an interior surface;
• an exterior surface;
• a first distal end;
• a second distal end opposite the first distal end;
• a first set of threads disposed on the exterior surface proximate the first distal end;
• and
• a plurality of extensions proximate the second distal end, wherein the plurality of extensions comprising a plurality of inner surfaces inclined towards the central axis;
• an elastomer seal connected to the interior surface proximate the plurality of extensions, the elastomer seal configured to abut the plurality of inner surfaces;
• a compression member configured to rotate the plurality of extensions, whereby rotation of the plurality of extensions compresses the elastomer seal;
• the compression member comprising a plurality of tabs disposed around an interior compression surface of the compression member;
• an earthing insert mounted in the gland body proximate the first distal end;
• an o-ring disposed around the exterior surface proximate the first set of threads;
• and
• a nut demountably attached to the first set of threads for compressing the o-ring against the gland body.

A grounding spring comprising:

• a coiled member spiraling inwardly towards a central spring axis;
• wherein the coiled member forms a central coil region about the central spring axis;
• a restraining tab connected to the coiled member at a first coil distal end;
• the retraining tab extending outwardly and away from the coiled member;
• and
• a planar grounding tab connected to the coiled member at a second coil distal end;
• the planar grounding tab extending away from the coiled member.

A method of grounding a cable, which comprises:

• providing a cable gland comprising:
• a gland body comprising:
• a first set of threads disposed along an exterior surface of the gland body at a first distal end of the gland body;
• a second set of threads disposed along the exterior surface of the gland body;
• a central body disposed between the first set of threads and the second set of threads;
• and
• a plurality of extensions disposed proximate the second set of threads and extending to a second distal end, the plurality of extensions configured to rotate towards a central axis of the gland body;
• an elastomer seal connected to an interior surface of the gland body, the elastomer seal abutting the plurality of extensions;
• whereby rotation of the plurality of extensions towards the central axis reduces an interior diameter of the elastomer seal;
• a grounding spring having an central coil region, the grounding spring frictionally connected to an interior surface of the gland body;
• and
• a compression body configured to thread onto the second set of threads and rotate the plurality of extensions towards the central axis;
• expanding the central coil region of the grounding spring;
• inserting a cable through the compression body, the cable gland, and the central coil region;
• contracting the central coil region about the cable;
• whereby the grounding spring is in electrical communication with a metallic portion of the cable;
• threading the compression body on the second set of threads;
• whereby the plurality of extensions are rotated towards the central axis and subsequently compress the elastomer seal about the cable creating an air-tight seal;
• and
• connecting the grounding spring to a ground terminal;
• thereby electrically grounding the metallic portion of the cable.