CF
Ceiling fan plan mark
Plan mark for a ceiling sweep fan, showing blade positions around a central outlet.
IEC
IEC · EF
Extract fan plan mark
Plan mark for a wall or ceiling extract fan, drawn as a fan circle with an outward airflow arrow.
In plain English
What does Extract fan plan mark mean?
Extract fans in bathrooms, kitchens and plant rooms are drawn as a circle containing fan blades or a cross, with an arrow showing airflow out of the room. The symbol is often linked to a light switch, an overrun timer or a humidistat.
A simple example
The electrician needs to know the control method because it affects wiring: a fan run from the lighting circuit with an overrun timer needs a switched and a permanent live, while a humidistat fan may only need a permanent supply. The symbol does not state airflow rate or duct size, which are mechanical design items.
What the drawings help you do
Read the control method: switched, timer overrun, humidistat or continuous. Check for an isolator or fused connection unit. A ceiling sweep fan circulates air; an extract fan removes it to outside.
This particular reference
Plan mark for a wall or ceiling extract fan, drawn as a fan circle with an outward airflow arrow. A ceiling sweep fan circulates air; an extract fan removes it to outside.
- Schematic
- A drawing showing function and connections rather than physical appearance.
Read the source: IEC graphical symbols for diagrams
IEC · Extract fan
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 · EF
What it represents
Extract fans in bathrooms, kitchens and plant rooms are drawn as a circle containing fan blades or a cross, with an arrow showing airflow out of the room. The symbol is often linked to a light switch, an overrun timer or a humidistat.
The electrician needs to know the control method because it affects wiring: a fan run from the lighting circuit with an overrun timer needs a switched and a permanent live, while a humidistat fan may only need a permanent supply. The symbol does not state airflow rate or duct size, which are mechanical design items.
How to read it
- Read the control method: switched, timer overrun, humidistat or continuous.
- Check for an isolator or fused connection unit.
Information to show or reference
- State control method.
- Show isolator location.
- Coordinate duct route with mechanical drawings.
A distinction that matters
A ceiling sweep fan circulates air; an extract fan removes it to outside.
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; 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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