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. The cable has a design that ensures operation for more than 3 hours in fi es up to 1000 °C. In addition, also with water spray and. Fire resistance and Dca, Cca & B2ca Euroclasses optical cables. Tight buffer optical cables for indoor and outdoor. Available in. Our fire resistant/fire survival cables feature a steel wire/steel wire braiding/corrugated steel tape armour to provide mechanical strength. Certified to B2ca CPR and FE180 fire-resistance standards, these cables maintain optical integrity under extreme. When you specify or buy fiber cables, the jacket material and fire rating are as important as fiber type and connector.