# Twisted-pair indication

Canonical URL: https://eloragrid.ai/symbols/iec-twisted-pair-indication
Publisher: Elora Grid
Updated: 2026-10-14
Lookup label: HT0_TW
Drawing use: Schematic
Reference families: IEC, Manufacturer

## Symbol convention

Convention: IEC
Form: Twisted-pair indication
Autodesk IEC-60617 Symbol Preview — Cable identification and twisted-pair annotation; vendor family reference, not certified IEC geometry or database identifier.

A twisted-pair indication identifies the documented association of two conductors as a twisted pair.

## What it represents

A twisted-pair indication identifies the documented association of two conductors as a twisted pair. The pair association matters to conductor identification and termination, even when the two wires are drawn apart elsewhere. It does not by itself describe the cable screen or its termination.
Preserve pair numbers and polarity through connector and terminal schedules. If a screen is required, draw and document that interface separately.

## How to read it

- Record pair identity and the actual conductor mapping separately.
- Twisting and shielding are different cable attributes; a twist indication does not prove a screen is present.

## Information to show or reference

- Identify the associated device, circuit or diagram boundary.
- Record pair identity and the actual conductor mapping separately.
- Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.

## Important distinction

Twisting and shielding are different cable attributes; a twist indication does not prove a screen is present.

## Facts

- Reference scope: Specific public IEC-context family form
- Publisher reference token: HT0_TW (Autodesk token; not a verified IEC database ID)
- Information added: Record pair identity and the actual conductor mapping separately.
- Preview: Independent educational concept; consult the publisher and applicable standard for the exact graphic

## Public references

- [Autodesk IEC-60617 preview: Cable identification and twisted-pair annotation](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-37A08C35-43A3-484D-B0EB-0BBCBC4BE709.htm) — Autodesk. Official public publisher family name and reference context; vendor identifiers and graphics are distinct from licensed IEC database content.

## Graphic scope

Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.