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 name "Hubbell" can be confusing as several different connectors share this name depending on the company, industry, and use.) In the motion picture and TV production industries, an extension cord that uses this type of connector (usually with 12 AWG or 10 AWG wire) is called a "stinger". Generally, lighting technicians use these extension cords to deliver power to lights rated at 2000 W or less.