Hi, I am new to this Forum so hope I am doing the right thing but I am wondering if there is anyone out there that has used the 50 amkp cheater box where you can use it at the campgrounds that have 2 30 amp plugs where you plug this in to both of them and then your 50 amp plugs goes into a abox that the 2 leads from the 30 amp plugs go to and also you can have a 30 amp and 1 20 amp or 15 amp that goes to the 50 amp box. are they safe to use as I have heard different stories on this item. would sure apprciate any feedback or information. Thanks Keith