Fastener retainers, thumb nut retainer assemblies, power distribution enclosure assemblies, and connection methods

(canceled)

(canceled)

(canceled)

(canceled)

A fastener retainer, comprising:

• a retainer body including a first retaining surface and a second retaining surface opposed to the first retaining surface and configured to form an open-sided retaining feature that allows a thumb nut to rotate therein and translate along an axial axis, yet restrains the thumb nut from lateral motion and allows finger and thumb access to the thumb nut via side openings of the open-sided retaining feature,
• wherein the retainer body comprises an end portion, and a first support and a second support extending from the end portion, wherein the first support includes the first retaining surface and the second support includes the second retaining surface,
• wherein the end portion comprises a post configured to receive a threaded portion of the thumb nut thereon.

(canceled)

A fastener retainer, comprising:

• a retainer body including a first retaining surface and a second retaining surface opposed to the first retaining surface and configured to form an open-sided retaining feature that allows a thumb nut to rotate therein and translate along an axial axis, yet restrains the thumb nut from lateral motion and allows finger and thumb access to the thumb nut via side openings of the open-sided retaining feature;
• and
• an end portion, a first support, a second support, and a third support, each extending from the end portion, wherein a second open-sided retaining feature is formed by the second support and the third support.

-20. (canceled)