HW01
Cable identification marker
A cable marker identifies a cable association within a schematic conductor group.
IEC
IEC · W
Conductors within one cable
An outline or loop drawn across several conductor lines to show that they are cores of the same cable.
In plain English
What does Conductors within one cable mean?
On multi-line schematics each core is drawn as a separate line, which hides the fact that several of them share one sheath. A grouping outline drawn across those lines tells the reader they are cores of one cable. It is typically paired with a cable tag so that the cores can be traced to the cable schedule.
A simple example
The outline implies no screen and no particular core count beyond the lines it crosses. Spare cores are often not drawn, so the cable may have more cores than the outline encloses. Cores from one cable may also be split across several sheets, each with its own grouping mark and the same cable tag.
What the drawings help you do
Read the cable tag beside the grouping outline. Expect spare cores that are not drawn. A grouping outline shows shared sheath only; a screen outline shows a conductive shield around the cores.
This particular reference
An outline or loop drawn across several conductor lines to show that they are cores of the same cable. A grouping outline shows shared sheath only; a screen outline shows a conductive shield around the cores.
- Normally open / normally closed
- The contact state in the normal condition defined for the drawing.
- Schematic
- A drawing showing function and connections rather than physical appearance.
Read the source: Autodesk IEC-60617 preview: Cable identification and twisted-pair annotation · IEC-60617 symbol preview directory
IEC · Cable core grouping form
Independent IEC-context illustration; not certified IEC geometry.
Shown as an independently authored educational illustration. Use the cited publication and drawing legend to verify the required drafting form.
Schematic · W
What it represents
On multi-line schematics each core is drawn as a separate line, which hides the fact that several of them share one sheath. A grouping outline drawn across those lines tells the reader they are cores of one cable. It is typically paired with a cable tag so that the cores can be traced to the cable schedule.
The outline implies no screen and no particular core count beyond the lines it crosses. Spare cores are often not drawn, so the cable may have more cores than the outline encloses. Cores from one cable may also be split across several sheets, each with its own grouping mark and the same cable tag.
How to read it
- Read the cable tag beside the grouping outline.
- Expect spare cores that are not drawn.
Information to show or reference
- Tag every grouping outline with the cable number.
- Use the same tag on every sheet the cable appears on.
- Record spare cores in the cable schedule.
A distinction that matters
A grouping outline shows shared sheath only; a screen outline shows a conductive shield around the cores.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Autodesk IEC-60617 preview: Cable identification and twisted-pair annotation
Public IEC-60617 preview family for cable markers used with core groupings.
IEC-60617 symbol preview directory
Public directory of IEC-oriented symbol families.
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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