{"schemaVersion":1,"slug":"ansi-earth-connection","name":"ANSI/IEEE earth connection symbol","kind":"symbol","abbreviation":"-","aliases":["IEEE ground","ANSI earth ground","ground connection"],"category":"connections-wiring","drawingTypes":["SLD","Schematic"],"referenceFamilies":["IEEE / ANSI","Manufacturer"],"summary":"IEEE-oriented ground symbol with three diminishing bars, used for a general connection to earth.","description":["US-practice drawings show a connection to earth ground with a vertical lead ending in three horizontal bars of decreasing length. The publisher's IEEE miscellaneous preview lists an Earth/Ground form alongside functional and protective forms, which the existing ANSI pages for those concepts already cover.","This is an independently drawn explanation rather than the IEEE graphic. The general ground symbol does not say whether the connection is for safety or function; where the distinction matters, use the protective or functional form. Grounding electrode details belong on the grounding plan."],"readingNotes":["Check whether a protective or functional form should be used instead.","Find the grounding electrode system on the grounding plan."],"drawingChecklist":["Use the general symbol only where the purpose is clear.","Reference the grounding plan.","Keep symbol usage consistent across the set."],"distinction":"The general ground symbol marks any earth connection; the ANSI protective earth form specifically marks a safety ground.","facts":[{"label":"Convention evidence","value":"Autodesk IEEE Symbol Preview: Miscellaneous (Earth/Ground)"},{"label":"Public vendor block name","value":"HGND2 (Autodesk identifier; not an IEEE symbol number)"},{"label":"Standards context","value":"IEEE/ANSI 315-1975 covers diagram graphics; IEEE lists this edition as Inactive-Reserved."},{"label":"Preview","value":"Original educational illustration; consult the publisher and applicable standard for the exact graphic"}],"references":[{"sourceId":"ansi-autodesk-34282bfd-7b8e-48f3-a6ed-93adbdddfbd3","relevance":"Exact public IEEE-oriented category page listing the Earth/Ground form."},{"sourceId":"ieee-315","relevance":"Graphic-symbol standards context and official status; not a source of reproduced artwork."}],"related":["earth-connection","ansi-protective-earth","ansi-functional-earth"],"artwork":"s28-ansi-earth-connection","publishedOn":"2026-10-28","updatedOn":"2026-10-28","provenance":"independent-public-research","symbolVariant":{"convention":"IEEE / ANSI","form":"Autodesk IEEE-oriented Earth/Ground form","reference":"Autodesk publishes this block under IEEE Symbol Preview: Miscellaneous. The counterpart is the matching functional concept; no equivalence of every detailed standard graphic is asserted.","counterpart":"earth-connection"},"plainEnglish":{"title":"What does ANSI/IEEE earth connection mean?","introduction":"US-practice drawings show a connection to earth ground with a vertical lead ending in three horizontal bars of decreasing length. The publisher's IEEE miscellaneous preview lists an Earth/Ground form alongside functional and protective forms, which the existing ANSI pages for those concepts already cover.","example":"This is an independently drawn explanation rather than the IEEE graphic. The general ground symbol does not say whether the connection is for safety or function; where the distinction matters, use the protective or functional form. Grounding electrode details belong on the grounding plan.","drawings":"Check whether a protective or functional form should be used instead. Find the grounding electrode system on the grounding plan. The general ground symbol marks any earth connection; the ANSI protective earth form specifically marks a safety ground.","terms":[{"name":"Terminal","meaning":"An identified point where a conductor connects."},{"name":"Schematic","meaning":"A drawing showing function and connections rather than physical appearance."}],"diagram":"flow","steps":["Identify the device and form","Read the connections and state","Check the equipment reference"],"caption":"A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram.","sources":[{"label":"Autodesk IEEE Symbol Preview — Miscellaneous","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-34282BFD-7B8E-48F3-A6ED-93ADBDDDFBD3.htm"},{"label":"IEEE/ANSI 315-1975: graphic symbols for electrical and electronics diagrams","url":"https://standards.ieee.org/ieee/315/515/"}],"detail":"IEEE-oriented ground symbol with three diminishing bars, used for a general connection to earth. The general ground symbol marks any earth connection; the ANSI protective earth form specifically marks a safety ground.","profileId":"reviewed-symbol-20261028"},"url":"https://eloragrid.ai/symbols/ansi-earth-connection","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/ansi-earth-connection.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"ansi-autodesk-34282bfd-7b8e-48f3-a6ed-93adbdddfbd3","title":"Autodesk IEEE Symbol Preview — Miscellaneous","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-34282BFD-7B8E-48F3-A6ED-93ADBDDDFBD3.htm","type":"cad-reference","scope":"Verified public IEEE-oriented vendor catalogue. Block names identify vendor symbols, not IEEE standard symbol numbers. Linked only; graphics and CAD files are not redistributed. IEEE/ANSI 315-1975 is a historical graphics reference with Inactive-Reserved status; this page does not certify current standards compliance.","checkedOn":"2026-10-14","reuse":"link-only","relevance":"Exact public IEEE-oriented category page listing the Earth/Ground form."},{"id":"ieee-315","title":"IEEE/ANSI 315-1975: graphic symbols for electrical and electronics diagrams","publisher":"IEEE Standards Association","url":"https://standards.ieee.org/ieee/315/515/","type":"standard","scope":"Graphic symbols and designation letters. IEEE lists this edition as Inactive-Reserved; it is a historical reference, not a claim of current compliance.","checkedOn":"2026-10-13","reuse":"link-only","relevance":"Graphic-symbol standards context and official status; not a source of reproduced artwork."}]}