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

IEEE / ANSI

ANSI/IEEE chassis ground symbol

US-practice electronics and control schematics show chassis ground as a line ending in a horizontal bar with angled strokes beneath it. It identifies a connection to the equipment frame and is often used for screen terminations and filter returns inside an enclosure.

Drawing use: Schematic
Application: Connections & wiring
Reference family: IEEE / ANSI
Form evidence: Chassis ground form. Independent illustration in IEEE drafting context; no equivalence of every detailed standard graphic is asserted.

A distinction that matters

Chassis ground ties to the frame; earth ground ties to the grounding electrode system.

Full reference

IEC

Frame or chassis connection

The frame or chassis connection shows that a circuit point is connected to the metal structure of a device, drawn as a line ending in a comb or hatched mark. It is common on electronics, vehicle and machine wiring, where the chassis is used as a common reference or return.

Drawing use: Schematic
Application: Connections & wiring
Reference family: IEC
Form evidence: Frame or chassis connection. Independent IEC-context illustration; not certified IEC geometry.

A distinction that matters

A chassis connection ties to the equipment frame; a protective earth connection ties to the installation earthing system.

Full reference

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