Busbar

What it represents

A busbar connects multiple power circuits to a common electrical node. In an SLD it is commonly represented as a line with feeder connections. The representation describes connectivity; physical conductor dimensions, enclosure, phase arrangement and current-carrying capabilities are separate equipment information.

Bus sections and bus couplers describe how those electrical nodes can be connected or separated. Keep bus labels consistent between the system drawing, switchboard schedule and equipment documentation. A drawing line is not a scale representation of a physical busbar.

How to read it

• Identify each feeder connected to the same bus section.
• Use device positions to determine which sections are shown as connected in the stated drawing condition.

Information to show or reference

• Name each bus or bus section.
• Reference ratings and fault-duty information.
• Cross-reference any coupler or section device.

Sources you can follow

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

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: 13 October 2026