Abstract: An outdoor busway system includes one or more conductor sections and one or more electrical connectors such that a conductor section of the outdoor busway system comprises a housing assembly and a conductor set. An atmospheric vent system for a busway enclosure of an outdoor busway system comprises a connector housing assembly of the outdoor busway system. The connector housing assembly comprises first opposed metal side plates bolted together with second opposed metal plates that are aligned perpendicularly at either end of the first opposed metal side plates such that the connector housing assembly forms a connector housing which includes one or more atmospheric vents affixed into either of sides or ends of the connector housing. Each atmospheric vent of the connector housing having an elastomeric body and a spherical weight that is moveably restrained such that an internal wall engages the spherical weight to create a seal.