Gas insulated bus

A gas insulated bus comprising:

• a first container including a first flange and forming a sealed space in which an insulating gas is enclosed;
• a second container including a second flange joined to the first flange and forming the sealed space together with the first container;
• a conductor housed in the sealed space;
• and
• an insulating support supporting the conductor in the sealed space, wherein
• the entire first flange forms an outer flange,
• the second flange has a first part forming an inner flange, and a second part other than the first part, the second part forming an outer flange, the first part forming the inner flange extending around only a portion of the inner circumference of the second container,
• the inner flange includes a mounting to which an end portion of the insulating support is attached,
• the second container includes an extension portion in a portion in which the inner flange is provided, the extension portion extending toward a side opposite to a central axis of the conductor, and
• at least part of the end portion of the insulating support attached to the mounting extends into the extension portion.