You will find that the copper discs round have a nice smooth surface that improves contact area.
The Midwest Temporary RV Power Outlet is factory-assembled and factory-tested. The single, heavy-gauge NEMA 3R rainproof enclosure protects against weather, vandalism and nuisance tripping. It is lockable and is engineered…
Receptacle Type (1) NEMA TT-30R (2-Pole, 3-Wire). Circuit Protection None (Receptacle only; requires external breaker). Midwest Electric Products. Manufacturer Midwest Electric Products (ABB/GE). Mounting Style Surface Mount.
