Spur
Distribution Protection · Also: Fused spur, Socket spur
In short
An extra socket or FCU branched off an existing ring or radial circuit.
Notes
A spur is a branch from an existing circuit rather than a brand-new run back to the DB. Useful for adding one more point — within wiring-regulation limits.
Do not keep spurring off spurs casually; the electrician should confirm the circuit design still complies.