SLOTHOKY RTP SLOT The neutral blade on 5-15P plugs is not always wider than the line blade, since the ground pin enforces polarity. The Electrical Safety Foundation International has stated: "Never remove the ground pin (the third prong) to make a three-prong plug fit a two-prong outlet". In stage lighting for film and theater, this connector is sometimes informally known as PBG (Parallel Blade with Ground), U-ground, Edison or Hubbell, the name of a common manufacturer. The 5-15R and 5-20R are by far the most common electrical receptacle in North America in buildings built since the mid-twentieth century. These prevent contact by objects like keys or paper clips inserted into the socket.|Time-{tested|examined} {Ways|Methods} To Slot Used 1 Of 2