{"schemaVersion":1,"slug":"iec-double-junction","name":"Double junction of conductors","kind":"symbol","abbreviation":"-","aliases":["staggered junction","offset four-way connection","double T-junction"],"category":"connections-wiring","drawingTypes":["Schematic","SLD"],"referenceFamilies":["IEC"],"summary":"Four conductors joined using two offset T-junctions rather than one crossing dot, to avoid confusion with a crossing.","description":["A four-way connection drawn as a cross with a single dot can be misread if the dot is lost in printing or scanning. The double junction draws the same connection as two T-junctions offset a short distance along the line, each with its own dot, so that the connection survives poor reproduction.","Electrically the double junction is the same node as a dotted cross. It does not represent two separate joints. Drafters use it to make the intent robust, and readers should not count it as an additional connection point or a different wire number unless the drawing shows one."],"readingNotes":["Treat the two offset tees as one electrical node.","Confirm wire numbers are the same on all four branches."],"drawingChecklist":["Use offset tees instead of dotted crosses for four-way nodes.","Keep the offset small enough to read as one node.","Number all four branches consistently."],"distinction":"A double junction is one node drawn as two offset tees; an unconnected crossing has no node at all.","facts":[{"label":"Graphic cue","value":"Two dotted tees offset along a conductor"},{"label":"Electrical meaning","value":"One node, same as a dotted four-way cross"},{"label":"Preview","value":"Original educational illustration; consult the publisher and applicable standard for the exact graphic"}],"references":[{"sourceId":"iec-public-wire-connections","relevance":"Public guidance on connection dots and crossing display."},{"sourceId":"autodesk-index","relevance":"Public directory of IEC-oriented symbol families."}],"related":["iec-conductor-connection-junction","iec-unconnected-conductor-crossing","iec-t-connection-without-dot"],"artwork":"s28-iec-double-junction","publishedOn":"2026-10-28","updatedOn":"2026-10-28","provenance":"independent-public-research","symbolVariant":{"convention":"IEC","form":"Offset double junction","reference":"Independent IEC-context illustration of a drafting convention; not certified IEC geometry."},"plainEnglish":{"title":"What does Double junction of conductors mean?","introduction":"A four-way connection drawn as a cross with a single dot can be misread if the dot is lost in printing or scanning. The double junction draws the same connection as two T-junctions offset a short distance along the line, each with its own dot, so that the connection survives poor reproduction.","example":"Electrically the double junction is the same node as a dotted cross. It does not represent two separate joints. Drafters use it to make the intent robust, and readers should not count it as an additional connection point or a different wire number unless the drawing shows one.","drawings":"Treat the two offset tees as one electrical node. Confirm wire numbers are the same on all four branches. A double junction is one node drawn as two offset tees; an unconnected crossing has no node at all.","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":"Wire connection dots, crossing gaps and loops","url":"https://help.autodesk.com/cloudhelp/2020/ENU/AutoCAD-Electrical/files/GUID-936BB8A9-9C01-4AC6-B833-CB97700A7203.htm"},{"label":"IEC-60617 symbol preview directory","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-7871E6EF-24D5-467E-9B74-321FEDC9DFDA.htm"}],"detail":"Four conductors joined using two offset T-junctions rather than one crossing dot, to avoid confusion with a crossing. A double junction is one node drawn as two offset tees; an unconnected crossing has no node at all.","profileId":"reviewed-symbol-20261028"},"url":"https://eloragrid.ai/symbols/iec-double-junction","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/iec-double-junction.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"iec-public-wire-connections","title":"Wire connection dots, crossing gaps and loops","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2020/ENU/AutoCAD-Electrical/files/GUID-936BB8A9-9C01-4AC6-B833-CB97700A7203.htm","type":"cad-reference","scope":"Public drafting-tool documentation. The annotation is a connectivity or identification convention, not a verified IEC standard graphic.","checkedOn":"2026-10-14","reuse":"link-only","relevance":"Public guidance on connection dots and crossing display."},{"id":"autodesk-index","title":"IEC-60617 symbol preview directory","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-7871E6EF-24D5-467E-9B74-321FEDC9DFDA.htm","type":"cad-reference","scope":"Public reference directory of named symbol categories. Vendor graphics and CAD library files are not redistributed here.","checkedOn":"2026-10-13","reuse":"link-only","relevance":"Public directory of IEC-oriented symbol families."}]}