Resettable fuse for caravans

Considering the increasing volume of electrical equipment towed along by today's caravanners, people frantically searching for torchlights and then the spare fuses box can be observed almost any night on any camping site. If you have a caravan, and want to keep that unpleasant aspect of holiday making at bay, you are weil advised to extend the electrical system with a resettable fuse as described here.