When Is LSZH Cable Mandatory in Public Buildings, Tunnels, and Underground Stations?
Low Smoke Zero Halogen (LSZH) cables[1]are legally and technically mandatory in enclosed, densely populated, or subterranean environments where smoke toxicity and visibility hazards pose critical life-safety risks during a fire. Global fire safety codes—such as IEC 60332, IEC 61034, and IEC 60754, alongside regional building regulations like BS 7671[2]and NFPA standards—dictate their deployment in spaces […]