plugged-in appliances
Electric lighting without fixed installations, relying on movable lights plugged into sockets.
A lighting system based on plugged-in appliances indicates that there are no permanently installed lighting fixtures in the walls, ceiling, etc., but that electrical power is available for tenants or users to install their own portable lighting appliances and plug them in.
Available electrical outlets allow users to provide portable lamps even if no lamps are currently present. Permanently installed wall or ceiling fixtures are absent from this arrangement.
The category follows how lighting is supplied and installed rather than a particular bulb technology. A portable compact fluorescent lamp, for example, remains a plug-in appliance rather than a fixed fluorescent installation.
Related definitions
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fluorescent lighting
Fixed lighting in which electrically excited mercury vapor produces ultraviolet light that stimulates a phosphor coating. -
hanging incandescent lamps
Lights using electrically heated filaments which project or hang from the ceiling. -
incandescent wall lamps
Incandescent lighting fixtures mounted on or built into interior walls, using electrically heated filaments. -
led lighting
Room lighting using semiconductor light-emitting diodes to convert electrical energy into light. -
no electric lighting
The absence of any electrical system available for installed or plug-in lighting. -
recessed lighting
Incandescent lighting which is flush with or recessed above the ceiling plane. -
soffit lighting
Indirect lighting in which lamps are directed at planar surfaces such as walls and ceilings instead of the room itself. -
track lighting
Adjustable lamps attached to fixed wall or ceiling tracks, allowing changes in lighting arrangements.