Understand the difference.

Compare the meaning, drawing context and source references of two entries. A similar graphic or shared abbreviation does not establish equivalence.

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IEC

T-connection without junction dot

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.

Drawing use

Schematic / SLD

Application

Connections & wiring

Reference family

IEC

Form evidence

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

A distinction that matters

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

Full referenceAdd to legend

JUNCTION

Symbols

Conductor connection junction

A junction indication marks a documented electrical connection between conductor branches. The junction is a drawing connectivity statement: the branches belong to one connected electrical network at that point. It is different from a hardware splice which may have its own material and installation record.

Drawing use

Schematic

Application

Connections & wiring

Reference family

Manufacturer

A distinction that matters

A crossing line is not necessarily a connected conductor.

Full referenceAdd to legend

Original educational previews. Follow the source references on each full entry for the appropriate standard or selected product.