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.