A safety cable is a critical secondary‑support device used to secure lighting fixtures, effects units, speakers, and other overhead equipment in case their primary clamp or mounting hardware fails. Made from steel aircraft cable with end loops and a locking carabiner or quick link, it wraps around the fixture and the supporting pipe or truss to catch the unit if it slips or breaks free, preventing dangerous drops onto performers, crew, or audience. Safety cables are required by most venues, production companies, and industry regulators because they provide inexpensive, reliable fall protection for any flown or mounted device.