Illustrated explanation
3Link boxA power-cable sheath has its own designed circuit
- Cross-bonding
Designed sheath sections are cross-connected between phases. Cable lengths, insulation and protection are part of the complete scheme.
- Sheath circulating current
A closed sheath circuit can carry induced circulating current. Bonding choices affect losses and sheath-voltage conditions.
- Link boxThis term
The enclosure contains the specified sheath links and protective devices. Verify the actual link configuration before any change.
Cable sheaths can form circulating-current loops or be sectionalized and cross-connected. A link box implements the specified connections and any sheath-voltage protection.
Conceptual sheath-only routes; phase conductors are omitted. The drawing is not a protective-earthing wiring instruction or a complete high-voltage bonding scheme.