Do not leave the cable in the pool constantly, put it out of the pool after each use. Unplug power line, complete the cable and unscrew.
Wash the cable of any chemical residues with clear water after each cleaning procedure.
Put the cable length into the pool according to the pool dimensions, place the remaining cable at the edge of the pool.
Remove obstacles, built-in pool ladder / ladder from the pool to prevent the cable from getting caught.