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

IEC

Cable branch joint

A branch or tee joint connects a branch cable to a main cable without terminating the main cable at a switchboard. It is common on low voltage street mains and some legacy medium voltage networks, where services or spur cables are taken from the main along its route.

Drawing use: SLD / GA
Application: Connections & wiring
Reference family: IEC
Form evidence: Branch cable joint. Independent IEC-context illustration; not certified IEC geometry.

A distinction that matters

A branch joint connects a third cable mid-route; a one-line bus tap is a connection to a busbar, not a cable.

Full reference

IEC

Cable straight-through joint

The straight-through joint connects two cable lengths end to end, restoring insulation, screen and sheath continuity. It is shown on cable route drawings and network diagrams at joint bay positions, because joints are the most common failure points on long underground circuits and their locations are needed for fault finding.

Drawing use: SLD / GA
Application: Connections & wiring
Reference family: IEC
Form evidence: Straight-through cable joint. Independent IEC-context illustration; not certified IEC geometry.

A distinction that matters

A straight-through joint links two lengths of the same cable; a branch joint takes off a second cable.

Full reference

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