Abstract: An electrical services pole which is height adjustable for clamping between the floor and the ceiling of a room. The pole comprises an upper tubular core section vertically overlapping a lower tubular core section and forming therewith a vertical conduit for cables. A plurality of socket outlets are provided on the lower core section and removable cladding forming an outer sleeve is provided around at least the lower tubular core section to protect but give access to the socket outlets.

Abstract: An electrical plug comprises a plug body which houses two or more electrical terminals for connection to electrical cables, at least one of the terminals being conductively connectable and disconnectable from its respective contact pin. To achieve this, the plug body is provided with a tumbler switch, operable to effect electrical contact between a spring contact permanently conductively connected to the contact pins and the terminal by means of a pivoted lever normally biassed out of contact with the terminal by means of the spring contact. The rocker of the switch may be operated manually, but manual operation will be over-ridden on insertion and withdrawal of the plug from its complementary socket. The automatic switch control means comprises an axially slidable pin projecting from the plug body in the "switch on" position and retractable into the plug body on engagement of the axially slidable pin with the front face of the complementary socket, to urge the switch into the "off" position.

Abstract: The invention provides an electrical distribution system comprising a length of conduit 10 containing a plurality of continuous conductors. Electrical access to the conductors is achieved via a contact plug and a series of spaced entry apertures which are shaped to receive the plug in a particular orientation. Safety door means are provided within the conduit for each aperture and are designed to prevent contact with the conductors by means other than the correct contact plug. In one embodiment of the invention, the conduit is in two parts comprising a support section for securing to a supporting surface, and a wall section containing the entry apertures. The wall section can be connected to the support section at any desired location along its length.