Lamp
Indicator lamp
A visual indicator associated with a documented control or equipment condition.
Schematic
IEC · L
Luminaire general plan symbol
General installation plan symbol for a luminaire or lighting point, drawn as a crossed circle at the ceiling position.
In plain English
What does Luminaire general plan mean?
On IEC-style lighting plans a crossed circle marks the position of a luminaire or a lighting outlet. It is the base form that other luminaire symbols modify: lines are added for linear fittings, arrows for spotlights and letters for emergency or special types.
A simple example
The symbol is placed to scale at the ceiling position and tagged with a fixture type letter keyed to the luminaire schedule. Switching lines connect it to switches, and circuit labels identify the lighting circuit.
What the drawings help you do
The crossed circle on a plan is not a control panel indicator lamp, even though the graphic is similar. Context, scale and the schedule make the difference.
This particular reference
General installation plan symbol for a luminaire or lighting point, drawn as a crossed circle at the ceiling position. The indicator lamp in control schematics uses a similar graphic but signals equipment state; the plan symbol locates a room luminaire.
- Schematic
- A drawing showing function and connections rather than physical appearance.
Read the source: IEC graphical symbols for diagrams · Pilot lights: public symbol reference · Electrical installation design methodology and references
IEC · Luminaire, general
IEC 60617 installation-plan style (architectural and topographical installation symbols); independently drawn, not certified IEC geometry or a database identifier.
Shown as an independently authored educational illustration. Use the cited publication and drawing legend to verify the required drafting form.
GA · L
What it represents
On IEC-style lighting plans a crossed circle marks the position of a luminaire or a lighting outlet. It is the base form that other luminaire symbols modify: lines are added for linear fittings, arrows for spotlights and letters for emergency or special types.
The symbol is placed to scale at the ceiling position and tagged with a fixture type letter keyed to the luminaire schedule. Switching lines connect it to switches, and circuit labels identify the lighting circuit.
The crossed circle on a plan is not a control panel indicator lamp, even though the graphic is similar. Context, scale and the schedule make the difference.
How to read it
- Read the fixture type tag against the luminaire schedule.
- Follow switching lines to the switch positions.
Information to show or reference
- Tag each luminaire with its schedule type.
- Show switching links.
- Label the lighting circuit.
A distinction that matters
The indicator lamp in control schematics uses a similar graphic but signals equipment state; the plan symbol locates a room luminaire.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
IEC graphical symbols for diagrams
IEC graphical symbol context for installation plans; independently drawn here.
Pilot lights: public symbol reference
Public lamp symbol family; the plan luminaire uses a similar crossed-circle element in a different drawing context.
Electrical installation design methodology and references
Installation design methodology covering lighting circuits and final distribution.
About this graphic
This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.
SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.
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