IEC 60331 vs EN 45545-2: Fire-Resistant Cable Standards Explained (2026 Guide)
A complete engineer's guide comparing IEC 60331 and EN 45545-2 fire-resistant cable standards. Covers test methodologies, Hazard Level (HL1/HL2/HL3) classification, mica tape's role in compliance, and a decision framework for buildings, metros, and rail vehicles.