IEC · SE

Multicore cable sealing end

A cable termination where a multicore cable is sealed and its cores separated out to individual phase connections.

In plain English

What does Multicore cable sealing end mean?

The multicore sealing end shows a three-core or other multicore cable ending in a single termination from which the individual cores fan out. It is typical on medium voltage three-core cables entering ring main units, pole-mounted transformers and outdoor line transitions, where a breakout boot separates the cores.

A simple example

The symbol does not tell the reader the termination type or the screen and armour earthing arrangement. Armour is usually earthed at the gland and the core screens at the termination, both of which should appear on the earthing details. Phase identification of the fanned-out cores must also be checked against the equipment.

Identify the device and formRead the connections and stateCheck the equipment reference
A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram.

What the drawings help you do

Check phase identification of the separated cores. Find armour and screen earthing details. A multicore sealing end splits one cable into several cores; a single-core sealing end terminates one core per cable.

This particular reference

A cable termination where a multicore cable is sealed and its cores separated out to individual phase connections. A multicore sealing end splits one cable into several cores; a single-core sealing end terminates one core per cable.

Winding
A coil of conductor inside an electrical machine or transformer.
Phase
One of the related AC waveforms in a power system.
Rating
A value stating the conditions for which equipment is specified.

Read the source: Elastimold underground cable accessories · IEC-60617 symbol preview directory

IEC · Multicore sealing end

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.

SLD / Schematic · SEMulticore cable sealing end: original educational illustration
Original educational illustrationNot to scale · See source and graphic notes

What it represents

The multicore sealing end shows a three-core or other multicore cable ending in a single termination from which the individual cores fan out. It is typical on medium voltage three-core cables entering ring main units, pole-mounted transformers and outdoor line transitions, where a breakout boot separates the cores.

The symbol does not tell the reader the termination type or the screen and armour earthing arrangement. Armour is usually earthed at the gland and the core screens at the termination, both of which should appear on the earthing details. Phase identification of the fanned-out cores must also be checked against the equipment.

How to read it

  • Check phase identification of the separated cores.
  • Find armour and screen earthing details.

Information to show or reference

  • State termination type and voltage class.
  • Label phases on the separated cores.
  • Show armour and screen earthing.

A distinction that matters

A multicore sealing end splits one cable into several cores; a single-core sealing end terminates one core per cable.

Sources you can follow

These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.

Elastimold underground cable accessories

Manufacturer context for cable terminations and accessories.

ABB · Public reference checked 13 October 2026 · Link only

IEC-60617 symbol preview directory

Public directory of IEC-oriented symbol families.

Autodesk · Public reference checked 13 October 2026 · Link only

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.

Entry JSON · Entry Markdown · Last editorial update: 28 October 2026

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