Power line connector apparatus including a rib and resilient retaining ring

A method of coupling a first power line connector to a second power line connector, the method comprising:

• inserting a first power line connector into a second power line connector, the first power line connector comprising an outer casing that includes a groove that forms a recessed space annularly around the outer casing, the groove opening radially outward from the outer casing, the second power line connector comprising an electrical contact housing, the electrical contact housing including an electrical interface to establish an electrical connection with the first power line connector, the electrical contact housing including a rib that forms a recessed space annularly along one or more inner walls of the electrical contact housing;
• compressing a resilient retaining ring located at least partially within the groove, wherein the retaining ring is compressed against the inner walls of the electrical contact housing as the first power line connector is inserted into the electrical contact housing of the second power line connector;
• and
• uncompressing the retaining ring within the recessed space of the rib as the first power line connector is fully inserted into the electrical contact housing;
• wherein the contour of the rib comprises a forward edge and a back edge, the forward edge extending within the electrical contact housing at an angle with respect to a portion of the inner walls of the electrical contact housing, the back edge forming an abutment between the forward edge and the remainder of the inner walls of the electrical contact housing;
• and
• wherein the direction that the back edge extends within the electrical contact housing is substantially parallel to a radius of the electrical contact housing such that contact between the back edge of the rib and the resilient retaining ring prevents the first power line connector from being inserted within the electrical contact housing beyond a fully inserted position.