GEN
Generator
An electrical generating source represented in a power-system drawing.
SLD / Schematic
Symbols · AC 3PH
Three-phase AC source
A three-phase AC source identifies a documented three-phase supply boundary.
SLD / Schematic · AC 3PH
What it represents
A three-phase AC source identifies a documented three-phase supply boundary. Its nominal voltage, phase sequence and neutral availability must be stated where the design relies on them.
How to read it
- Locate the source boundary before interpreting upstream ownership or available fault data.
- The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation.
Information to show or reference
- Name supply origin
- State voltage and phase sequence
- Reference neutral/earthing arrangement
A distinction that matters
Three-phase source designation does not establish an accessible neutral conductor.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
AutoCAD Electrical: Earthing, sources and surge protection
Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic.
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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