IEEE / ANSI · -

ANSI/IEEE protective equipotential bonding symbol

IEEE-oriented protective equipotential bond, connecting exposed metal parts together for safety.

In plain English

What does ANSI/IEEE protective equipotential bonding mean?

The protective equipotential bond connects exposed and extraneous conductive parts so that dangerous touch voltages cannot develop between them during a fault. The publisher's IEEE miscellaneous preview lists a protective equipotential bond form, which is the US-practice counterpart of the existing IEC page.

A simple example

This illustration is an independent explanation and not the IEEE graphic. The bond symbol does not state conductor size or the parts bonded; those belong in bonding schedules. In US terminology this aligns with equipment bonding, which is distinct from the main bonding jumper at the service.

Identify the device and formRead the connections and stateCheck the equipment reference
A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram.

What the drawings help you do

Identify the parts bonded at each symbol. Distinguish equipment bonding from the service bonding jumper. A protective bond is for safety; a functional bond is for equipment operation or noise control.

This particular reference

IEEE-oriented protective equipotential bond, connecting exposed metal parts together for safety. A protective bond is for safety; a functional bond is for equipment operation or noise control.

Rating
A value stating the conditions for which equipment is specified.
Schematic
A drawing showing function and connections rather than physical appearance.

Read the source: Autodesk IEEE Symbol Preview — Miscellaneous · IEEE/ANSI 315-1975: graphic symbols for electrical and electronics diagrams

IEEE / ANSI · Autodesk IEEE-oriented protective equipotential bond form

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.

Shown as an independently authored educational illustration. Use the cited publication and drawing legend to verify the required drafting form.

Schematic · -ANSI/IEEE protective equipotential bonding symbol: original educational illustration
Original educational illustrationNot to scale · See source and graphic notes

What it represents

The protective equipotential bond connects exposed and extraneous conductive parts so that dangerous touch voltages cannot develop between them during a fault. The publisher's IEEE miscellaneous preview lists a protective equipotential bond form, which is the US-practice counterpart of the existing IEC page.

This illustration is an independent explanation and not the IEEE graphic. The bond symbol does not state conductor size or the parts bonded; those belong in bonding schedules. In US terminology this aligns with equipment bonding, which is distinct from the main bonding jumper at the service.

How to read it

  • Identify the parts bonded at each symbol.
  • Distinguish equipment bonding from the service bonding jumper.

Information to show or reference

  • Schedule bonding conductor sizes.
  • Label bonded parts.
  • Keep protective and functional bonds distinct.

A distinction that matters

A protective bond is for safety; a functional bond is for equipment operation or noise control.

Sources you can follow

These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.

Autodesk IEEE Symbol Preview — Miscellaneous

Exact public IEEE-oriented category page listing the protective equipotential bond form.

Autodesk · Public reference checked 14 October 2026 · Link only

IEEE/ANSI 315-1975: graphic symbols for electrical and electronics diagrams

Graphic-symbol standards context and official status; not a source of reproduced artwork.

IEEE Standards Association · Public reference checked 13 October 2026 · Link only

About this graphic

This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.

SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.

Entry JSON · Entry Markdown · Last editorial update: 28 October 2026

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