Electrical service / section pillar at south end of Linenhall Street, Belfast, BT2 8BA

Freestanding cast-iron electrical service or section pillar, sited at the edge of the pavement at the south end of Linenhall Street, near the junction with Ormeau Avenue. Dating from 1905 or shortly thereafter, this is thought to be one of only three such pillars to have survived in Belfast and one of the very few remaining structures associated with the city's tramways.

The pillar is broadly Classical in styling, with a sturdy rectangular plan measuring approximately 0.75 metres by 0.5 metres with curved corners. The main box section stands roughly 1.3 metres high and is topped with a domed, cushion-like oversailing cap crowned by a prominent ball finial. Each face is panelled, with hinged doors on the longer east and west faces, both displaying the arms of the City of Belfast. The lowest panel of the east door bears an oval plaque with the decorative letters 'BTH' (the manufacturer's logo for British Thomson-Houston); a similar plaque appears to have once existed on the west door. The structure remains largely intact externally, though a rise in the pavement level has jammed both doors shut and reduced the overall height by approximately 0.2 metres from its original dimensions.

The pillar originally housed electrical components relating to Belfast's tram and later trolleybus network. Such service pillars or isolation pillars functioned as junction points for power supplies or as isolators for electrically powered transport systems. Legislation required these pillars to be positioned every half mile along routes, enabling engineers to isolate sections of the network for maintenance work whilst the broader system continued to operate. Photographic evidence from before 1913 documents a similar pillar at Shaftesbury Square, supporting the dating of this example to 1905. British Thomson-Houston, whose logo appears on the pillar, had been accepted as suppliers of switch-boards for the tramway depots as part of Belfast Corporation's electrification of the tram network in 1905, and were likely responsible for providing these pillars or their internal components. Had this pillar served the tramline running along Ormeau Avenue, it would have been installed in 1905 and would have been decommissioned when the trolleybus system ceased operation in 1968. The pillar is of considerable industrial archaeological interest and remains an attractive example of early 20th-century street furniture.