[flybouy]

Used to be referred to as "hockey puck adapter" years ago. Lots of campgrounds years ago would have 30 amp only sites with no 15 or 20 amp outlets. I remember some campgrounds kept a box of them on the counter for renters that would check in. I think they were like a buck back then and often the cg would just give them away when someone would check in.

Often it's not as much about electrical adapters being manufactured with a defect as it is about how "cheap" items won't tolerate the abuse imposed upon them. INMHO someone using (or more accurately misusing) one of these inexpensive adapters have little knowledge of electricity or how to properly treat electrical devices. Plugging in and unplugging while "hot" under load, Extra weight hanging on the outlet/plug, overheating the cable and plugs from heavy loads on inadequate wire sized extension cords, etc. Just walk thru the tent sites in the fall anmd you'll see many "orange extension cords" of 14 or 16 ga. with a 3 prong plug on the end connecting more extension cords with several space heaters connected. And of course when their Frankenstein $10 cables melt they blame the the company that sold it to them.