This short guide explains the commonly used materials — LSZH and PVC — how industry fire-rating systems (plenum, riser, vertical flame tests) work, and practical tradeoffs so you can pick the right cable for the space and code requirements. Fire Resistant cable is ideal for installations requiring a cable that can withstand damage from fire or flame for a period of time. The focus here is strictly on fiber cable fire ratings and. ETK Kablo 's fire-resistant fiber optic cables ensure continuous data transmission during fire conditions, safeguarding critical communication lines when reliability is most crucial.