What are the main components of a fiber optic cable?Updated 9 months ago
A fiber optic cable comprises the core, cladding, coating, strengthening member, and the outer cable jacket. The cable jacket is crucial for protecting the core and cladding from damage.
Why are fiber optic cable jackets important?
Fiber optic cable jackets protect the core and cladding within the cable from mechanical damage and environmental hazards, such as fire. They are designed to ensure the cable's durability and safety.
What are the fire safety considerations for fiber optic cables?
Fiber optic cables must meet specific fire ratings, especially when used in riser or plenum spaces. This is to prevent the emission of hazardous chemicals and heavy smoke in case of a fire, ensuring safety within buildings.
What is LSZH in fiber optic cables and its significance?
LSZH stands for "Low-Smoke Zero-Halogen." It's a material used in cable jackets that is flame retardant and free from halogen, reducing smoke production and toxicity in case of fire. This makes it ideal for use in confined spaces with high human occupancy.
How do OFNP and OFNR fiber optic cables differ?
OFNP (Optical Fiber Non-conductive Plenum) cables have the highest fire rating, suitable for plenum spaces, and are fire-resistant with low smoke production. OFNR (Optical Fiber Non-conductive Riser) cables are used in riser spaces and have lower fire resistance and smoke production compared to OFNP. OFNP can replace OFNR, but not vice versa.
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