A locking system for a spool comprising a barrel, a flange, and a sliding lock. The sliding lock has at least one rail that slidably engages with at least one barrel detent and at least one flange detent to prevent rotation of the flange on the barrel. The sliding lock comprises at least one arm with at least one catch. The at least one catch can be removably locked into at least one recess on the flange.

A spool includes a receiving portion configured to receive a coil of cable and a first retaining portion and a second retaining portion configured to retain the coil of cable on the receiving portion. A portion of an outer peripheral surface of the first retaining portion and a portion of an outer peripheral surface of the second retaining portion are configured to engage a ground surface. The first retaining portion includes first support portions configured to extend beyond the outer peripheral surface of the first retaining portion to engage the ground surface across a greater distance than the outer peripheral surface of the first retaining portion, and the second retaining portion includes second support portions configured to extend beyond the outer peripheral surface of the second retaining portion to engage the ground surface across a greater distance than the outer peripheral surface of the second retaining portion.