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

SO-IP

IEC

Weatherproof socket outlet

Weatherproof outlets are placed on external walls, in wash-down areas, car parks and roof plant. The plan symbol uses the normal outlet form with an IP or WP tag, and some legends add a small enclosure line around the outlet to show the hinged cover.

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

A distinction that matters

An interior outlet and a weatherproof outlet can share the same base form; only the enclosure tag or outline distinguishes them.

Full reference

IEC

Socket outlet with protective earth contact

On an installation plan this mark places a socket outlet whose contact set includes a protective earth pin or earthing clip. The basic half-circle outlet form is completed by a straight bar across the top of the curve, which tells the reader that the outlet connects the protective conductor of the final circuit to the plug.

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

A distinction that matters

A plain socket-outlet mark shows an outlet position only; the earth bar adds the protective contact. The protective earth terminal symbol itself is a schematic conductor mark, not an outlet.

Full reference

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