What are OFNP, OFNR, OFNG and OFCG? Understanding gas gas directions

As copper brackets, the NEC (Nationwide Electrical Code) inside fiber optic cable should be labeled with gas and smoke.

In accordance with NEC, a built-in building web site is split into three sorts of sections: plenum, rises and basic areas.

:: What’s a planet space?

Plenum space is a building web site used for air stream or air distribution methods. In most buildings, the realm above the roof or below flooring is used as airflow (airflow) for the air con. They fall ceiling and raised flooring are additionally the place fiber cables are sometimes put in. If these cables have been burning, they’d emit poisonous steam and the vapors can be fed to the remainder of the air. Consequently, individuals could also be injured regardless that they’re removed from the hearth.

:: What’s a riser space?

] Riser space is a flooring opening, shaft or channel that runs vertically by way of a number of flooring

:: What’s a basic space of ​​entry?

All Different Areas of

:: Fiber Optic Cable Hearth and Smoking Ranking Markings

OFNP ]] Cables:

OFNP stands for Nonconductive Plenum Fiber Optic. OFNP cables have flammability and low manufacturing capability for smoke. They are often put in in channels, plenums, and different areas used to construct airflow. That is the best gas line and no different cable sorts can be utilized in its place.

OFCP Cables:

OFCP stands for main area for fiber optic cables. OFCP cables have the identical hearth and smoke ranking as OFNP cables, however they’ve a number one armor or a central energy that’s often metal. OFCP cables should be the proper floor in each ends. Consequently, OFCP cables can’t be put in in the identical cable field or channel as an influence twine.

OFNR Cables:

OFNR stands for non-conductive fiber optic cables. OFNR cables are utilized in a riser space that’s based mostly on vertical jogging or passing from one flooring to a different flooring. You cannot set up OFNR cables within the plenum space as they don’t require the required hearth and smoke certificates, reminiscent of Plenum cables.

OFCR Cables:

OFCR stands for a number one main fiber optic cable. OFCR cables have the identical gas traits as OFNR cables, however they’ve a number one armor or a most important reinforcement that’s often metal. OFCR cables also needs to be correctly grounded in each ends. OFCP cables can be utilized as substitutes for OFCR cables.

OFNG Kaplar:

OFNG stands for uncompromising basic goal photographs. They’re often utilized in horizontal cabins, single flooring. OFNG cables can’t be utilized in plenum or risers. OFNP and OFNR cables can each be used as substitutes for OFNG cables.

OFCG Cables:

OFCG stands for the principle fiber optic cable. They’ve the identical traits of gas and OFNG cable, however they’ve a number one armor or a central energy part that’s often metal. OFCG cables should be the proper floor at each ends. They shouldn’t be put in in the identical cable field or channels as cable.

Supply by Colin Yao

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