A transmission line assembly and a compact insulator and hardware assembly for a transmission line assembly are provided. In an embodiment, a transmission line assembly includes a first V-string including a first post insulator and a second post insulator; a second V-string including a third post insulator and a fourth post insulator; and a suspension insulator, and a first yoke plate, a second yoke plate, and a third yoke plate are configured to respectively support a first phase conductor, a second phase conductor, and a third phase conductor to have an inverted triangular configuration.