An inverted telescoping mast configured to be mounted to a ceiling or other structure within a building for supporting a payload at a range of heights within the building. The mast can include cable management for routing of cables external the mast for supplying/exchanging power, control signals, data etc. to the payload. An internal spring retains the mast in the retracted position. A tension control system restricts extension and/or retraction of the mast when actuating cable tension is above or below respective tension thresholds.