# T-connection without junction dot

Canonical URL: https://eloragrid.ai/symbols/iec-t-connection-without-dot
Publisher: Elora Grid
Updated: 2026-10-28
Lookup label: -
Drawing use: Schematic, SLD
Reference families: IEC

## Symbol convention

Convention: IEC
Form: Undotted T-connection
Independent IEC-context illustration of a drafting convention; not certified IEC geometry.

A conductor meeting another at a right angle and stopping there, which IEC practice reads as a connection even without a dot.

## In plain English

### What does T-connection without junction dot mean?

In IEC drawing practice a conductor that runs into another and ends there forms a T-connection, and the connection is understood whether or not a dot is drawn. Many drafting standards still recommend the dot for clarity, but undotted tees are common on legacy and vendor drawings.

### A simple example

The convention depends on the drawing family. On some ANSI-style drawings an undotted tee may be ambiguous, which is why a dot is preferred there. Readers should check the drawing legend. A T-connection only shows electrical continuity; it does not tell you where the physical joint is, which may be at a terminal some distance away.

### What the drawings help you do

Check the legend to see whether undotted tees are used as connections. Find the physical terminal or joint that realises the tee. An undotted tee is a connection; a plain four-way crossing without a dot is normally read as no connection.

### This particular reference

A conductor meeting another at a right angle and stopping there, which IEC practice reads as a connection even without a dot. An undotted tee is a connection; a plain four-way crossing without a dot is normally read as no connection.

### Terms

- Terminal: An identified point where a conductor connects.
- Schematic: A drawing showing function and connections rather than physical appearance.

Concept diagram: Identify the device and form → Read the connections and state → Check 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.

- [Wire connection dots, crossing gaps and loops](https://help.autodesk.com/cloudhelp/2020/ENU/AutoCAD-Electrical/files/GUID-936BB8A9-9C01-4AC6-B833-CB97700A7203.htm)
- [IEC-60617 symbol preview directory](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-7871E6EF-24D5-467E-9B74-321FEDC9DFDA.htm)


## What it represents

In IEC drawing practice a conductor that runs into another and ends there forms a T-connection, and the connection is understood whether or not a dot is drawn. Many drafting standards still recommend the dot for clarity, but undotted tees are common on legacy and vendor drawings.
The convention depends on the drawing family. On some ANSI-style drawings an undotted tee may be ambiguous, which is why a dot is preferred there. Readers should check the drawing legend. A T-connection only shows electrical continuity; it does not tell you where the physical joint is, which may be at a terminal some distance away.

## How to read it

- Check the legend to see whether undotted tees are used as connections.
- Find the physical terminal or joint that realises the tee.

## Information to show or reference

- Apply one tee convention consistently across the set.
- Prefer a dot where drawings may be read under other conventions.
- Avoid four-way crossings that rely on dots alone.

## Important distinction

An undotted tee is a connection; a plain four-way crossing without a dot is normally read as no connection.

## Facts

- Graphic cue: Conductor ending perpendicular on another without a dot
- Reading rule: Connected under IEC practice; check legend for other conventions
- Preview: Original educational illustration; consult the publisher and applicable standard for the exact graphic

## Public references

- [Wire connection dots, crossing gaps and loops](https://help.autodesk.com/cloudhelp/2020/ENU/AutoCAD-Electrical/files/GUID-936BB8A9-9C01-4AC6-B833-CB97700A7203.htm) — Autodesk. Public guidance on connection dots, crossing gaps and loops.
- [IEC-60617 symbol preview directory](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-7871E6EF-24D5-467E-9B74-321FEDC9DFDA.htm) — Autodesk. Public directory of IEC-oriented symbol families.

## 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.