SPT
Spotlight plan mark
Plan mark for a directional spotlight, drawn as a luminaire with a beam arrow showing aiming direction.
IEC
IEC · TRK
Lighting track plan mark
Plan mark for a lighting track that carries adapters for movable luminaires, drawn as a double line.
In plain English
What does Lighting track plan mark mean?
Lighting tracks are drawn as a double line or a line with regular cross ticks along the track run, with spotlights attached as separate symbols. The track is fed at one end or mid-point, and multi-circuit tracks allow luminaires to be assigned to different circuits.
A simple example
The plan shows track length and feed point, which the installer needs to order sections and end caps. Multi-circuit tracks are tagged with the number of circuits. The track symbol does not show how many luminaires will be clipped on in use. Loading is planned from the schedule.
What the drawings help you do
Find the feed point. Read circuit count for multi-circuit track. A linear luminaire emits light along its length; a track only carries adapters for separate luminaires.
This particular reference
Plan mark for a lighting track that carries adapters for movable luminaires, drawn as a double line. A linear luminaire emits light along its length; a track only carries adapters for separate luminaires.
- Schematic
- A drawing showing function and connections rather than physical appearance.
Read the source: IEC graphical symbols for diagrams
IEC · Lighting track
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 · TRK
What it represents
Lighting tracks are drawn as a double line or a line with regular cross ticks along the track run, with spotlights attached as separate symbols. The track is fed at one end or mid-point, and multi-circuit tracks allow luminaires to be assigned to different circuits.
The plan shows track length and feed point, which the installer needs to order sections and end caps. Multi-circuit tracks are tagged with the number of circuits. The track symbol does not show how many luminaires will be clipped on in use. Loading is planned from the schedule.
How to read it
- Find the feed point.
- Read circuit count for multi-circuit track.
Information to show or reference
- State track length.
- State circuits.
- Show feed point.
A distinction that matters
A linear luminaire emits light along its length; a track only carries adapters for separate luminaires.
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.
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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