If like me you're plugging your 'van in at home to keep the batteries charged, you may like to consider putting a regular three-pin plug on your campsite connection cable. Bit of a faff, but I was using an adapter set-up, and the fuses kept tripping. My wife was convinced it was my outdoor Christmas lights (extension cable up the drive, 4-gang socket, time switch), but proved to be rain in the adapter. Can now go away for the five days of Christmas (we seem to have lost the other seven), and leave the Christmas lights on so not the only dark house in the street.
Location: Portland, Dorset/ 1995 Elddis Eclipse 2.ltr petrol
I fitted a switched 16Amp (medium blue)waterproof socket from screwfix to the exterior of the house which is 'plugged in' to the ringmain via an ELCB.
This runs the van and the van runs the Christmas lights