Side-by-side reference

Understand the difference.

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

First referenceCompare with

IEEE / ANSI

ANSI ceiling lighting outlet plan symbol

In US lighting plans a ceiling lighting outlet or surface fixture is drawn as a circle, often with a letter inside or beside it keyed to the fixture schedule. Lowercase letters link fixtures to the switches that control them.

Drawing use: GA
Application: Installation & communications
Reference family: IEEE / ANSI
Form evidence: Ceiling lighting outlet. US architectural electrical plan practice in the ANSI Y32.9 lineage, read alongside IEEE 315 context; independently drawn, not a certified IEEE or ANSI graphic.

A distinction that matters

The IEC luminaire symbol is a crossed circle; the US outlet symbol is a plain circle.

Full reference

IEC

Luminaire general plan symbol

On IEC-style lighting plans a crossed circle marks the position of a luminaire or a lighting outlet. It is the base form that other luminaire symbols modify: lines are added for linear fittings, arrows for spotlights and letters for emergency or special types.

Drawing use: GA
Application: Installation & communications
Reference family: IEC
Form evidence: Luminaire, general. IEC 60617 installation-plan style (architectural and topographical installation symbols); independently drawn, not certified IEC geometry or a database identifier.

A distinction that matters

The indicator lamp in control schematics uses a similar graphic but signals equipment state; the plan symbol locates a room luminaire.

Full reference

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