Here is the sort of thing that is usual for connecting into at the caravan site:
10mA leakage current trip level.
Similar units can be found here, although quite often a pedestal will share the RCD between two or three outlets to reduce costs.
The trip level is usually the normal 30mA here though.
(They're blaiming mainland european practice for their overkill regulations - yet I don't think very many Mainland European countries actually enforce anything quite so strict
I don;t know about anywhere else, but certainly in France they don't seem to use IEC309 for all outdoor stuff. Even campsite hookups can be just a box with a normal domestic-type outlet inside.
then again there are parts of the west of ireland where it can rain horizontally for 7 days
I prepared myself for that sort of thing when heading west. I then spent a couple of days in Co. Galway and it was bright sunshine and about 80 degrees!
Where as TLC charges a couple of pounds for a 16A plug, over here they go for anywhere between $30-80
Gold-plated shell and platinum contacts?
I wonder if this is because they've not been around so long in the States? Any idea when IEC309 was first introduced over there?