HEATER
Heating element
A heating element converts electrical energy to heat in a documented circuit.
SLD / Schematic
IEC · HTR
Electric space heater plan mark
Plan mark for a fixed electric space heater, drawn as a rectangle with internal heating strokes.
In plain English
What does Electric space heater plan mark mean?
Fixed space heaters such as panel heaters, convector heaters and radiant wall heaters are drawn as a rectangle at the wall with parallel strokes or a zigzag representing the heating element. The rating in watts or kilowatts is usually written beside the symbol.
A simple example
The mark tells the electrician to provide a dedicated circuit or fused connection and a control, which may be an integral thermostat or a room thermostat shown separately. Heater ratings feed the maximum demand calculation. The heating element symbol on schematics shows the resistor function; this plan mark locates a complete appliance.
What the drawings help you do
Read the kW rating. Check how the heater is controlled. A heating element in a schematic is a component; this plan mark represents an installed heater appliance.
This particular reference
Plan mark for a fixed electric space heater, drawn as a rectangle with internal heating strokes. A heating element in a schematic is a component; this plan mark represents an installed heater appliance.
- Terminal
- An identified point where a conductor connects.
- Rating
- A value stating the conditions for which equipment is specified.
- 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 · Space heater
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 · HTR
What it represents
Fixed space heaters such as panel heaters, convector heaters and radiant wall heaters are drawn as a rectangle at the wall with parallel strokes or a zigzag representing the heating element. The rating in watts or kilowatts is usually written beside the symbol.
The mark tells the electrician to provide a dedicated circuit or fused connection and a control, which may be an integral thermostat or a room thermostat shown separately. Heater ratings feed the maximum demand calculation. The heating element symbol on schematics shows the resistor function; this plan mark locates a complete appliance.
How to read it
- Read the kW rating.
- Check how the heater is controlled.
Information to show or reference
- State rating.
- Show control device.
- Show isolation and protection.
A distinction that matters
A heating element in a schematic is a component; this plan mark represents an installed heater appliance.
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.
Electrical installation design methodology and references
Design methodology for heating loads and maximum demand.
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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