Your Best Partner for Fiber Optic Solutions

Other materials of Fiber Optic Patch Cable

More and more customers in USA asked about the Plenum fiber optic cables (OFNP), so we need to know the difference between OFNP, OFNR? Just like copper cables, NEC (National Electrical Code) requires indoor fiber optic cables be marked with their fire and smoking ratings. NEC requires all indoor fiber cables be marked correctly and installed properly for its intended use.
According to NEC, a building’s inside area is divided into three types of sections: plenums, risers and general purpose areas.

What is a Plenum area?
A Plenum area is a building space used for air flow or air distribution system. In most buildings, the area above a drop ceiling or under a raised floor is used as the air return (source of air) for the air conditioning. Those drop ceiling and raised floors are also where fiber cables are often installed. If those cables were burning, they would give off toxic fumes and the fumes would be fed to the rest of the building by the air conditioner. As a result, people could be injured even though they are a long way from the fire.

What is a Riser area?
A Riser area is a floor opening, shaft or duct that runs vertically through one or more floors.

What is General Purpose area?
All other area, which is not plenum or riser on the same floor, is a general purpose area.
 

OFNP Cables:
OFNP stands for Optical Fiber Nonconductive Plenum. OFNP cables have fire-resistance and low smoke production characteristics. They can be installed in ducts, plenums and other spaces used for building airflow. This is the highest fire rating fiber cable and no other cable types can be used as substitutes.
 

OFCP Cables:
OFCP stands for Optical Fiber Conductive Plenum. OFCP cables have the same fire and smoking rating as OFNP cables but they have a conducting armor or central strength member which is usually steel. OFCP cables must be properly grounded at both ends. As a result, OFCP cables can not be installed in the same cable tray or conduit as power cables.

OFNR Cables:
OFNR stands for Optical Fiber Nonconductive Riser. OFNR cables are used in Riser areas which are building vertical shafts or runs from one floor to another floor. OFNR cables can not be installed in plenum areas since they do not have the required fire and smoking rating as Plenum rated cables. OFNP plenum cables can be used as substitutes for OFNR cables.

OFCR Cables:
OFCR stands for Optical Fiber Conductive Riser. OFCR cables have the same fire rating characteristics as OFNR cables but they have conducting armor or central strength member which is usually steel. OFCR cables should also be properly grounded at both ends. OFCP cables can be used as substitutes for OFCR cables. OFCR cables can not be installed in the same cable trays or conduits as power cables.

OFNG Cables:
OFNG stands for Optical Fiber Nonconductive General-Purpose. They are typically used in horizontal cabling, single floor applications. OFNG cables cannot be used in plenums or risers. OFNP and OFNR cables both can be used as substitutes for OFNG cables.

OFCG Cables:
OFCG stands for Optical Fiber Conductive General-Purpose. They have the same fire characteristics as OFNG cables but they have conducting armor or central strength members which is typically steel. OFCG cables should be properly grounded at both ends. They should not be installed in the same cable tray or conduits as power cables.

Related Tutorials

Reliability of Fiber Optic Patch Cord

Executive Summary  The quality, reliability, and performance of optical patch cords are assured by selecting the best components and by terminating and polishing with the best equipment and procedures.  These components and procedures must assure that the patch cords meet or exceed the requirements of all pertinent industry specifications.  This paper describes the relevance of the criteria in the applicable industry specifications, as well as the importance of the physical parameters and how they relate to the performance of the patch cord. Introduction   Fiber optic patch cords are one of the simplest elements in any optical network, consisting of a piece of fiber optic cable with

Review these reminders and warnings before you inspect and clean your fiber-optic connections

Reminders •  Always turn off any laser sources before you inspect fiber connectors, optical components, or bulkheads.•  Always make sure that the cable is disconnected at both ends or that the card or pluggable receiver is removed from the chassis.•  Always wear the appropriate safety glasses when required in your area. Be sure that any laser safety glasses meet federal and state regulations and are matched to the lasers used within your environment.•  Always inspect the connectors or adapters before you clean.•  Always inspect and clean the connectors before you make a connection.•  Always use the connector housing to plug or unplug a

Sample Connectors and Accessories

Note: Angled physical contact (APC) connectors typically have a green connector or boot. Blue and other color connectors have a flat or convex endface. Figure 26: LC Type Connector and Accessories (1.25 mm ferrule) Figure 26: LC Type Connector and Accessories (1.25 mm ferrule) Figure 28: FC Type Connector and Accessories (2.5 mm ferrule) Figure 29: E2000 Type Connector and Accessories (2.5 mm ferrule) Figure 30: MU Type Connector and Accessories (1.25 mm ferrule) Figure 31: MTP/MPO Type Connector (multifiber ferrule) Figure 32: OGI Type Connector (multifiber) Figure 33: Receptacle Devices
Copyright © 2019 Fiber optic equipment manufacturer in China, SFP, FTTH, fiber converter, cable.