Technical Articles
Access practical technical guides, cable selection advice, standards explanations and infrastructure design insights from Heizka.
What Is LSZH Cable and Where Should It Be Used?
LSZH means Low Smoke Zero Halogen — a cable material description, not a complete fire-performance classification. This guide explains the…
Shielded vs Unshielded Fire-Resistant Cable: How to Choose
Shielded vs unshielded fire-resistant cable compared: what a screen does, when it is needed, grounding practice, capacitance effects, standards and…
Fire-Resistant Cable vs Flame-Retardant Cable: Key Differences
Fire-resistant and flame-retardant cables address different safety objectives. A flame-retardant cable is designed to limit flame propagation, while a fire-resistant…