Bicsi And Codeology > Chapter 5 Cable Installation > Flashcards

Chapter 5 Cable Installation Flashcards

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1
Q

What are some “ best practices” you should do when you pull cable

A

Not allow the cable to kink or twist

Maintain minimum cable bend radius throughout the pull

Avoiding damaging the jacket

Don’t exceed max pulling tension of the cable

Conditioning cables per manufacturers instructions

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2
Q

What can be used to control how much cable your pulling

A

A reel or cable brake device

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3
Q

What is the max pulling force you can use for balanced twisted pair cable (4 pair and 25 pair)

A

110N or 25lbs

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4
Q

Max pulling force for flexible coaxial cable?

A

It will depend on manufacturers instructions

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5
Q

Max pulling force for semi rigid coax cable

A

324lbs or 1440N

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6
Q

How many bends are allowed per 100ft pull if the pull is in conduit

A

Two 90 degree bends

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7
Q

What does a swivel do?

A

It attaches between the pull string and cables to help prevent the pull string from twisting around the cable while evenly distributing pressure on all cables in the bundle

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8
Q

How should you make a tapered head?

A

Select a guide cable then tape your next cables 3 inches behind the guide. Cotninue the process until your head is made

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9
Q

How much service slack should horizontal cables have?

A

They should have enough to reach the furthest corner of the TR plus the floor to ceiling distance

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10
Q

How much service slack should copper back bone cables have?

A

Enough to reach the farthest part of the backboard in case new equipment is added later

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11
Q

How much slack should balanced twisted pair Cable have left in a work area?

A

.5m or 1.6ft of slack left to allow for 1ft of cable after termination

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12
Q

What is the minimum bend radius that conduit with a 2in internal diameter must maintain.

What should it be if it’s internal diameter is greater than 2 in?

A

The bend radius should be at least 6 times the internal conduit diameter

It should be 10 times internal diameter if its internal diameter is over 2 inches

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13
Q

What is the average walking span?

A

1m or 3.3 ft

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14
Q

Name some methods to establishing cable run distance

A

Using marked pull tape
Pacing or walking the distance
Use a measuring wheel
Use a tape measure
Count ceiling tiles
If visible count counting conduit sections

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15
Q

What’s the minimum number of half hitches you need when using a pull string to pull

A

3

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16
Q

What is the max distance you can have between hooks in any direction.

A

5ft

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17
Q

Should structural steel be used to support cable?

A

Definitely not it’s sharp as fuck

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18
Q

Name some helpful devices that are helpful to use when installing your pull strings

A

Telescoping pole ,fish rod, remote controlled vehicles, or mechanically propelled casters

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19
Q

What does each 90 degree bend identify?

A

A pull point

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20
Q

Name some examples of concealment methods

A

Modular furniture runways

Utility columns

Surface raceways

Floor raceways

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21
Q

What should you add next to where the cable enters the conduit

A

Always leave a service loop and install support near where the cable enters the conduit

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22
Q

What height are telecom outlets usually installed at?

A

15-18 inches

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23
Q

What should you consider when installing pathways?

A

Making sure your cable keeps proper separation from electrical services

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24
Q

What may be needed to help control the decent of the cable as it’s pulled off the reel?

A

A cable break

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25
How must bullywheels be attached to use it properly
It must be attached to the building structure or when used vertically it can be attached to the pathway
26
What is an alternative method of pulling instead of using a pulling eye?
A pulling grip that is a flexible wire mesh device that elongates and compresses as tension is applied
27
What should you use to pull heavy cable
A tugger
28
Where should installers be placed during a vertical pull
On each floor the cable will pass plus the floor it will terminate
29
If you have to use a bullwheel how many places should it be attached to the building
It should be attached in three places
30
What is the minimum bend radius multi pair copper cables require
10 times their diameter
31
How close to the connecting hardware should labels be
Within 12 inches
32
What is the first choice when pulling backbone cable vertically
Pulling it from the top down
33
What may be necessary to handle the cable from the reel location to the point where it will be pulled to
A pulling sheave
34
If you have to use cable lube what should you make sure of?
That it doesn’t damage the cable and make sure the lubricant is following whatever rules the authority having jurisdiction has for it
35
How far back should you apply cable lube
1m or 3.3ft back
36
What does using a swivel help prevent
The cable from twisting as it’s being pulled forward
37
Why should you always use proper cable management when making bundles?
To avoid creating excessive outside noise interference (axt)
38
What is the performance of the channel rated at?
The lowest performance component Example. If cat6 is terminated into cat 6 outlets but only cat 5 patch cords are used then the channel will only be valid to support cat 5 applications
39
For patch cord management how many ru’s is recommended per every two ru’s of patch panels
2 rus of 90mm of cable management
40
Should you try and keep the minimum bend radius of your cable when pulling?
Always
41
What does an IDC connection permit
It permits the termination of an insulated conductor without stripping insulation from the conductor
42
What are the two types of contacts connectors typically have
IDC AND IPC Most connectors use IDC designed for solid conductors while modular plugs also may use IPC’s designed for stranded conductors only
43
What are the three common modular connectors used in ICT
4p4c 6p6c 8p8c
44
What does 4p4c stand for and what is it used in
4 position 4 contact connectors and it’s primarily used for telephone handset cords
45
What are 6p6c connectors used for?
6 point 6 contact connectors are used primarily for phones and modern line cords
46
When installing ICT equipment what must the installer make sure of
The installer should make sure that what’s being installed has matching or compatible performance with the connecting hardware.
47
How are modular plug IPCS for stranded conductors designed?
They are designed using a single blade to penetrate the conductors insulation and slide between the individual strands
48
A color code?
White/green, green, white/orange, blue, white/blue, orange, white/ brown, brown
49
B color code?
White/orange, orange, white/green, blue, white/blue, green, white/brown, brown
50
When terminating how much cable should you strip off?
1 inch using a crimping tool or UTP cable stripper
51
What are the 4 types of IDC termination blocks?
66 style block 110 style block BIX style block LSA style block
52
How do you avoid making severe changes of twist rate
By not making a sharp turn crossing its mated conductor at a 90 degree angle
53
When terminating cat 5e and higher how close should the twist be maintained
It should be maintained up to the termination point but untwisting shall not exceed .5in away from the termination point
54
When terminating cat 3 cable how close should the twist be maintained up to the termination point
Within 3 inches from the termination point
55
What style of backboard may the 66 style block be mounted on?
On back boards with either 89 style bracket. (89b and 89d)
56
How is cable routed for a 66 style connecting block.
It’s routed through the 89 brackets to allow the pairs to be fanned out from the rear into a the guides in the side of the block
57
Are Bridging clips cat 5e complaint
They are not
58
Does the 110 style block contain the idc itself
No it does not because the idc for this termination is in the C-2(2-pair), C-3(3three pair), C-4(4 pair) and the C-5(5 pair l) terminating clip or connector block that is punched down on top of the 110 block
59
What’s does lsa stand for?
No solder, no use of screws, no insulation removal
60
What are the three tools you can use to remove cable sheathing
Snips, ringing tool, slitter tool
61
What does BNC stand for and how long has it been used for
Since the 1940’s and it stands for Bayonet Neill- concelman
62
What are the theee types of BMC connectors
Two piece and three piece crimp One-piece compression( recommended) Screw on
63
How far back should you strip coax cable?
.25 inches
64
What is a splice?
The joining of copper conductors or optical fiber cable strands from two cables at a point not considered a termination point
65
Where are intrabuilding splices usually performed?
In the er, tr, and efs But they could be in MHs, handholes, buried enclosures or Aerial
66
What kind of cabling is splicing allowed in?
Backbone cabling never horizontal
67
What kind of connectors are backbone cables spliced in
Single connectors and multi splicing modules
68
When are single connectors not recommend?
They’re not recommended for splices of more than 50 pairs. They also aren’t to be used in category complaint installations
69
Name the three major types of splice closures and their definitions
Straight- connecting cables straight through in a line by line manner Branch- three or more cables entering a splice case from both directions in which cable pairs or optical fiber strand counts move from sheath to sheath Butt- two or more cables that enter a splice case from the same direction.
70
Name the two common modular splicing techniques
Inline and fold back
71
How are wires placed with the inline splicing method
They’re placed in a straight across arrangement and allows for little to no wire slack. This method is not designed to be rearranged and should receive minimal handling
72
What does the fold back method allow for?
It allows the conductors to be folded into the splice. It also allows maintenance, rearrangement of conductors and transfer of conductors. It typically requires more cable to be stored within the splice and could increase the size of enclosure.
73
What method is used in most splices
Foldback
74
What is the most common module used in permanent splices
A straight module
75
What does a bridge module do?
It connectorizes the end of a single cable with a pluggable bridging module that can be repeatedly attached and separated to other connectors
76
What does a straight module do?
It joins the end of a binder group from two separate cables using a 25 pair module
77
What does a half tap module allow for?
It allows a second cable to be spliced into the middle of an existing Cable without interrupting service.
78
What can a second cable that has been connectorized with a bridging module be plugged into?
A half tap module
79
Where can the hardware for connecting the cable shields usually be found?
Within the packaging of the closure
80
Where should the plastic tie be placed?
1 inch from the butt of the cable
81
What 25 pair group should you select to place the splicing head on?
The back bottom 25 pair group from the feeding cable
82
Why should you wrap a splice in polyethylene wrap?
So that the connector modules and cable pairs don’t become pinched in the closure
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