ADVICE ON PROVIDING ELECTRIC HOOKUP FACILITIES ON CLs approved hookup facilities, you are advised to look at points 9 and 11 below, It is a statutory requirement that the earthing system for electrical hook-ups on caravan sites. Built in overload and 30mA fault current protection; Weatherproof enclosure; Includes all internal wiring; Built-in cable terminals. Part number EB Manf #. Water hook-up points for tourers: Campsites and Holiday Parks. Clear text. Filter/sort List icon List · Map icon Map. Sort by. Our favourites. Our favourites, User.