# Functional earth

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

Functional earth serves an operational purpose such as a documented EMC or signal-reference connection.

## What it represents

Functional earth serves an operational purpose such as a documented EMC or signal-reference connection. It must be distinguished from the protective-earthing path required for exposed conductive parts.

## How to read it

- Trace any intended separation or connection between functional and protective earth.
- The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation.

## Information to show or reference

- Label functional-earth conductor
- State bonding relationship
- Reference equipment instructions

## Important distinction

A functional-earth connection does not automatically fulfil protective-earthing requirements.

## Facts

- Drawing role: Earth or bonding role
- Representation scope: Functional concept; not an official standard graphic or a product footprint
- Public vendor block reference: HGND3, VGND3 (Autodesk identifiers; not IEC symbol numbers)
- Identifier status: The short label is a functional lookup label, not an assigned IEC or IEEE symbol number. Any separately listed Autodesk code is a verified vendor block name.

## Public references

- [AutoCAD Electrical: Earthing, sources and surge protection](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-1E3FDEAE-B4B2-417C-8075-108AA2C6E509.htm) — Autodesk. Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic.

## 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.