A maintenance disconnecting means is required for the permanently installed pool, storable pool, outdoor spa, outdoor hot tub, or fountain equipment, other than lighting for these water bodies [680.12]. The maintenance disconnecting means must be readily accessible and located within sight and at least 5 ft from the permanently installed pool, storable pool, outdoor spa, outdoor hot tub, or fountain equipment, unless separated from the open water by a permanently installed barrier that provides a 5-ft reach path or greater. This horizontal distance is measured from the water’s edge along the shortest path required to reach the disconnecting means
According to Art. 100, “within sight” means it’s visible and not more than 50 ft from one to the other.