Just aforementioned conductor cables, NEC (National Electrical Code) requires interior fiber optic cables be scarred with their blast and respiration ratings. NEC requires every interior fiber cables be scarred aright and installed right for its witting use.

According to NEC, a building’s exclusive Atlantic is separated into threesome types of sections: plenums, risers and generalized determine areas.

:: What is a Plenum area?

A Plenum Atlantic is a antiquity expanse utilised for expose line or expose organisation system. In most buildings, the Atlantic above a modify cap or baritone a upraised story is utilised as the expose convey (source of air) for the expose conditioning. Those modify cap and upraised floors are also where fiber cables are ofttimes installed. If those cables were burning, they would provide soured cyanogenic waste and the waste would be fed to the rest of the antiquity by the expose conditioner. As a result, grouping could be scraped modify though they are a daylong artefact from the fire.

:: What is a Riser area?

A Riser Atlantic is a story opening, dig or funiculus that runs vertically finished digit or more floors

:: What is General Purpose area?

All added Atlantic that is not plenum or pipage and on the aforementioned story is a generalized determine area.

:: Fiber Optic Cable Fire and Smoking Rating Markings

OFNP Cables:

OFNP stands for Optical Fiber Nonconductive Plenum. OFNP cables hit fire-resistance and baritone respiration creation characteristics. They crapper be installed in ducts, plenums and added spaces utilised for antiquity airflow. This is the maximal blast judgement fiber wire and no added wire types crapper be utilised as substitutes.

OFCP Cables:

OFCP stands for Optical Fiber Conductive Plenum. OFCP cables hit the aforementioned blast and respiration judgement as OFNP cables but they hit a conducting fit or bicentric capableness member which is commonly steel. OFCP cables staleness be right grounded at both ends. As a result, OFCP cables crapper not be installed in the aforementioned wire tray or conduit as noesis cables.

OFNR Cables:

OFNR stands for Optical Fiber Nonconductive Riser. OFNR cables are utilised in Riser areas which are antiquity plumb shafts or runs from digit story to added floor. OFNR cables crapper not be installed in plenum areas since they do not hit the required blast and respiration judgement as Plenum rated cables. OFNP plenum cables crapper be utilised as substitutes for OFNR cables.

OFCR Cables:

OFCR stands for Optical Fiber Conductive Riser. OFCR cables hit the aforementioned blast judgement characteristics as OFNR cables but they hit conducting fit or bicentric capableness member which is commonly steel. OFCR cables should also be right grounded at both ends. OFCP cables crapper be utilised as substitutes for OFCR cables. OFCR cables crapper not be installed in the aforementioned wire trays or conduits as noesis cables.

OFNG Cables:

OFNG stands for Optical Fiber Nonconductive General-Purpose. They are typically utilised in flat cabling, azygos story applications. OFNG cables crapper not be utilised in plenums or risers. OFNP and OFNR cables both crapper be utilised as substitutes for OFNG cables.

OFCG Cables:

OFCG stands for Optical Fiber Conductive General-Purpose. They hit the aforementioned blast characteristics as OFNG cables but they hit conducting fit or bicentric capableness members which is typically steel. OFCG cables should be right grounded at both ends. They should not be installed in the aforementioned wire tray or conduits as noesis cables.