LF3
Multi-tube fluorescent luminaire plan mark
Plan mark for a linear luminaire with several tubes, shown as parallel lines between common end bars.
IEC
IEC · LF
Linear fluorescent luminaire plan mark
Plan mark for a linear fluorescent or tube luminaire, a long line with short end bars drawn to the fitting length.
In plain English
What does Linear fluorescent luminaire plan mark mean?
Linear fluorescent luminaires are drawn on IEC-style plans as a straight line with a short perpendicular bar at each end, laid out at the length and orientation of the actual fitting. The same form is widely reused for linear LED battens.
A simple example
Because the line is drawn to length, the plan doubles as a setting-out drawing for ceilings. The fixture type tag gives the lamp length and wattage, and emergency versions add a mark or letter. The single line does not give the number of tubes. A separate multi-tube form shows two or more lines.
What the drawings help you do
Measure or read the length tag. Check orientation relative to ceiling grid. A multi-tube fitting shows parallel lines; this form shows a single tube or a generic linear fitting.
This particular reference
Plan mark for a linear fluorescent or tube luminaire, a long line with short end bars drawn to the fitting length. A multi-tube fitting shows parallel lines; this form shows a single tube or a generic linear fitting.
- Schematic
- A drawing showing function and connections rather than physical appearance.
Read the source: IEC graphical symbols for diagrams · Electrical installation design methodology and references
IEC · Fluorescent lamp luminaire
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 · LF
What it represents
Linear fluorescent luminaires are drawn on IEC-style plans as a straight line with a short perpendicular bar at each end, laid out at the length and orientation of the actual fitting. The same form is widely reused for linear LED battens.
Because the line is drawn to length, the plan doubles as a setting-out drawing for ceilings. The fixture type tag gives the lamp length and wattage, and emergency versions add a mark or letter. The single line does not give the number of tubes. A separate multi-tube form shows two or more lines.
How to read it
- Measure or read the length tag.
- Check orientation relative to ceiling grid.
Information to show or reference
- Tag lamp length and type.
- Coordinate with ceiling layout.
- Show emergency fittings distinctly.
A distinction that matters
A multi-tube fitting shows parallel lines; this form shows a single tube or a generic linear fitting.
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.
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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