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

MBJ

IEEE / ANSI

ANSI/IEEE main bonding jumper symbol

In North American practice the main bonding jumper connects the grounded conductor, the neutral, to the equipment grounding conductor and enclosure at the service equipment. Its function corresponds to the neutral-to-earth link in TN-C-S systems. Single-line diagrams show it at the service disconnect, and separately derived systems have a corresponding system bonding jumper.

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

A distinction that matters

A main bonding jumper bonds neutral and ground at the service; an equipment bonding jumper bonds metal parts together.

Full reference

MEN

IEC

Neutral-to-earth link

The neutral-to-earth link connects the neutral and earth bars at one point, normally the main switchboard. In Australian and New Zealand practice it is the MEN link, and in other TN-C-S schemes it is the point where the incoming PEN is split. It provides the low impedance path that lets earth faults operate overcurrent devices.

Drawing use: SLD / Schematic
Application: Connections & wiring
Reference family: IEC
Form evidence: Neutral to earth bonding link. Independent IEC-context illustration; not certified IEC geometry.

A distinction that matters

The neutral-to-earth link bonds N and PE in service; the earth test link is opened only to test the electrode.

Full reference

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