I'm in need of a 30A extension cord for a big trip this summer ("just in case").
All of the extension cords that I've seen go between the plug end of the existing cord and the supply post, with mating plug/socket.
While these would work just fine, it bothers me that there's nothing covering the mating surfaces of where the normal supply cord plugs into the extension cord.
I was wondering if there are any extension cords that use the same twist-lock connector that connects the supply cord to the camper ?
So you'd plug (and twist lock) the extension into the camper, and then connect the other end to the normal supply cable (which would also make use of the twist-lock connectors), and then just plug the normal cable into the supply post.
Seems that with the twist-lock connectors it would all be much more secure, and rain resistant.
Hope that makes some sense