Side-by-side reference

Understand the difference.

Compare the meaning, drawing context and source references of two entries. A similar graphic or shared abbreviation does not establish equivalence.

First referenceCompare with

TRK

IEC

Lighting track plan mark

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.

Drawing use: GA
Application: Installation & communications
Reference family: IEC
Form evidence: Lighting track. IEC 60617 installation-plan style (architectural and topographical installation symbols); independently drawn, not certified IEC geometry or a database identifier.

A distinction that matters

A linear luminaire emits light along its length; a track only carries adapters for separate luminaires.

Full reference

SPT

IEC

Spotlight plan mark

Spotlights are drawn with a luminaire mark and a short arrow or beam lines showing aim. On retail and gallery plans the arrow tells the installer where to point the head on commissioning, saving a separate aiming schedule for simple projects.

Drawing use: GA
Application: Installation & communications
Reference family: IEC
Form evidence: Spotlight. IEC 60617 installation-plan style (architectural and topographical installation symbols); independently drawn, not certified IEC geometry or a database identifier.

A distinction that matters

A floodlight spreads wide light over an area; a spotlight concentrates a narrow beam on an object.

Full reference

Original educational previews. Follow the source references on each full entry for the appropriate standard or selected product.