Chapter 5 - Cable Flashcards
Two types of cable designs
Loose buffered and tight buffered
Two types of tight buffered cable?
Distribution and breakout
What is distribution cable used for?
Used mostly inside or in between buildings.
In this type of cable, each of the 900-um coated fibers has its own aramid strength member and outer jacket.
Breakout
What type of cordage is used in patchcords and jumpers?
Breakout style
Metal strands or corrugated steel tape that offer protection from rodent attack and crushing forces?
Armoring (buried cable)
What are gels, powders, and tapes in cable used for?
To repel water intrusion
OFNP
Nonconductive optical fiber plenum cable
Description of a plenum
The return of air handling space located between a roof and a dropped ceiling.
Description of a riser
Cables installed in vertical runs and penetrating more than one floor, or cables installed in vertical runs in a shaft.
50ft (15-meter) rule
No more than50ft of measured unlisted conductive and nonconductive outside plant cables shall extend into the structure and should transition to inside rated cables.
Due to the metallic structure of ________________, it must be grounded per NEC requirements.
Interlocking Armor Cable
Jacket color for single-mode cable? Typically
Yellow
Jacket color of multimode cable? Typically
Orange
Dynamic bend radius
20
Static bend radius
10
What does the NEC define composite cable as?
A cable containing both optical fibers and current carrying electrical conductors in the same jacket.
What type of cable can have multimode and single-mode fiber types together?
Hybrid cables
What colors are used for single-mode cordage?
Yellow and Blue
What colors are used for multimode cordage?
Orange, Aqua, Heather/Erika Violet, and Lime
What is the outside coating diameter of the fiber used in tight buffered cables?
900um
What are the names of the two types of indoor tight buffered cables?
Distribution and Breakout
What does the acronym OFNR signify?
Nonconductive optical fiber riser cable
If a cable has any metallic components at termination point, what does the NEC require?
Must be bonded and grounded
What is the NEC 50 foot rule?
No more than 50ft of unrated outside plant cable should be pulled into building.
Sequential markings on the outside of cable jackets help to approximate what?
Cable length
What must installers consider when installing fiber optic cables?
Local codes and NEC
