# Protective earth

Canonical URL: https://eloragrid.ai/symbols/protective-earth
Publisher: Elora Grid
Updated: 2026-10-13
Lookup label: PE
Drawing use: SLD, Schematic
Reference families: IEC, IEEE / ANSI

An identified connection serving the protective earthing function.

## What it represents

Protective-earth identification indicates a connection serving the protective earthing function. It should be distinguished from functional earthing, signal references and other grounding conventions. The drawing context and applicable documentation establish the meaning of each connection.
A protective-earth mark does not specify conductor size, bonding arrangement or installation compliance. Those requirements are documented in the electrical design, equipment information and applicable installation rules. Equipment-marking symbols and diagram symbols can belong to different standards.

## How to read it

- Read the connection label and its intended function.
- Keep diagram references distinct from markings physically applied to equipment.

## Information to show or reference

- Identify the protective connection.
- Reference bonding and conductor information separately.
- Avoid ambiguous earth or signal-reference labels.

## Important distinction

Protective earth, functional earth and a signal common are different functions even when a drawing uses visually related marks.

## Facts

- Function: Protective earthing
- Installation detail: Separate design documentation
- Equipment markings: May reference a different symbol standard

## Public references

- [IEC graphical symbols for diagrams](https://tc3.iec.ch/tc-activity/graphical-symbols-for-diagrams/) — IEC. Official diagram-symbol reference and related symbol standards.
- [IEC-60617 symbol preview directory](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-7871E6EF-24D5-467E-9B74-321FEDC9DFDA.htm) — Autodesk. Public electrical drawing-category reference.

## 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.