Thursday, November 25, 2010

Learn English phrases

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pain, toil, and privation
pale, ugly, and sinister
parable, precept, and practise
partial, false, and disastrous
passion, tenderness, and reverence
patient, gentle, and kind
peace, order, and civilization
pellucid, animated, and varied [pellucid = transparently clear]
permanent, true, and real
perplexed, tedious, and obscure
personal, sharp, and pointed
perspicuity, vivacity, and grace [perspicuity = clearness and lucidity]
pert, smirking, and conceited
pervading, searching, and saturating
petty, unsuccessful, and unamiable
Fifteen Thousand Useful Phrases 208
philosophy, morals, and discoveries
picturesque, daring, and potent
piety, charity, and humility
pillage, arson, and bloodshed
pious, patient, and trustful
pity, sympathy, and compassion
placable, reasonable, and willing [placable = easily calmed; tolerant]
place, fame, and fortune
placid, clear, and mellow
plague, pestilence, and famine
plan, purpose, and work
pleasant, friendly, and amiable
pleased, interested, and delighted
pleasure, enjoyment, and satisfaction
plenty, content, and tranquillity
plodding, sedentary, and laborious
poise, dignity, and reserve
polished, elegant, and sumptuous
politics, business, and religion
pompous, affected, and unreal
poor, miserable, and helpless
pose, gesture, and expression
powerful, dazzling, and daring
practical, visible, and tangible
precious, massive, and splendid
precise, formal, and cynical
Fifteen Thousand Useful Phrases 209
prejudice, dulness, and spite
prepossessions, opinions, and prejudices
presiding, directing, and controlling
pride, passion, and conceit
princely, picturesque, and pathetic
principles, conduct, and habits
progress, order, and happiness
prolonged, obstinate, and continued
prompt, fiery, and resolute
propriety, perspicacity, and accuracy [perspicacity = perceptive]
prosaic, dull, and unattractive
protective, propitiatory, and accommodating [propitiatory = conciliatory]
protests, criticisms, and rebukes
proud, reserved, and disagreeable
prudence, mildness, and firmness
puckered, winking, and doddering
pure, honorable, and just
purge, brace, and strengthen
purpose, intention, and meaning
puzzles, tangles, and questionings
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Cabling tools part 2

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Pull String
Another way to pull cables through small spaces is with a nylon pull string (also called a fish cord),
a heavy-duty cord strong enough to pull several cables through a conduit or wall cavity. The
pull string is either put in place before all the cables are pulled, or it is run at the same time as
the cables. If it is put in place before the cables are pulled, such as when the conduit is assembled
or in a wall cavity before the drywall is up, you can pull through your first cables with
another string attached to the cables. The second string becomes the pull string for the next
bundle, and so on. For future expansion, you leave one string in with the last bundle you pull.
If the pull string is run at the same time as the cables, it can be used to pull additional cables
through the same conduit as already-installed cables.
Cable-Pulling Lubricant
It is important not to put too much stress (25 lbs of pull maximum) on network cables as they
are being pulled. To prevent stress on the cable during the pulling of a cable through a conduit,
a cable-pulling lubricant can be applied. It reduces the friction between the cable being pulled
and its surroundings and is specially formulated so as not to plug up the conduit or dissolve the
jackets of the other cables. It can be used any time cable needs to be pulled in tight quarters.
See Chapter 6 for more details, including some drawbacks of lubricant.
Labeling Materials
With the hundreds of cables that need to be pulled in large cabling installations, it makes a
great deal of sense to label both ends of each cable while it’s being pulled. That way, when it’s
time to terminate each individual cable, you will know which cable goes where, and you can
document that fact on your cabling map.
So you will need some labeling materials. The most common are the sticky numbers sold by
Panduit and other companies (check with your cabling supplier to see what it recommends).
You should pick a numbering standard, stick with it, and record all the numbered cables and
their uses in your cabling documentation. A good system is to number the first cable as 1, with
each subsequent cable the next higher number. You could also use combinations of letters and
numbers. To label the cables, stick a number on each of the cables you are pulling and stick
another of the same number on the corresponding box or spool containing the cable. When
you are finished pulling the cable, you can cut the cable and stick the number from the cable
spool onto the cut end of the cable. Voila! Both ends are numbered. Don’t forget to record on
your notepad the number of each cable and where it’s going.
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Saturday, November 20, 2010

Cabling tools part 1

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Hand Tools
It’s fairly obvious that a variety of hand tools are needed during the course of a cabling installation.
You will need to remove and assemble screws, hit and cut things, and perform various
types of construction and destruction tasks. Some of the hand tools you should make sure to
include in your tool kit are (but are not limited to) the following:
● Screwdrivers (Phillips, slotted, and Torx drivers)
● Cordless drill (with drill bits and screwdriver bits)
● Hammer
● Cable cutters
● Wire strippers
● Punch-down tool
● Drywall saw (hand or power)
Cable Spool Racks
It is usually inefficient to pull one cable at a time during installation. Typically, more than one
cable will be going from the cabling closet (usually the source of a cable run) to a workstation
outlet. So a cable installer will tape several cables together and pull them as one bundle.
Fish Tape
Many times, you will have to run cable into narrow conduits or narrow crawl spaces. Cables are
flexible, much like rope. Just like rope, when you try to stuff a cable into a narrow space, it simply
bunches up inside the conduit. You need a way of pulling the cable through that narrow
space or providing some rigid backbone. A fish tape is one answer. It is really nothing more than
a roll of spring steel or fiberglass with a hook on the end. A bunch of cables can be hooked and
pulled through a small area, or the cables can be taped to the fish tape and pushed through the
conduit or wall cavity.
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Tuesday, November 9, 2010

About cabling tools

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Cabling Tools
Just like any other industry, cable installation has its own tools, some not so obvious, including
the following:
● Pen and paper
● Hand tools
● Cable spool racks
● Fish tape
● Pull string
● Cable-pulling lubricant
● Two-way radio
● Labeling materials
● Tennis ball
We’ll briefly go over how each is used during installation.
Pen and Paper
Not every cabling installer may think of pen and paper as tools, but they are. It is a good idea
to have a pen and paper handy when installing the individual cables so that you can make notes
about how particular cables are routed and installed. You should also note any problems that
occur during installation. Finally, during the testing phase (discussed later), you can record test
data in the notebook.
These notes are invaluable when it’s time to troubleshoot an installation, especially when you
have to trace a particular cable. You’ll know exactly where particular wires run and how they
were installed.
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Friday, November 5, 2010

Schedule the cable Installation

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In addition to having a proper cabling design, you should also know approximately how long
the installation will take and pick the best time to do it. For example, the best time for a new
cabling installation is while the building studs are still exposed and electrical boxes can be easily
installed. From a planning standpoint, this is approximately the same time in new construction
when the electrical cabling is installed. In fact, because of the obvious connection between electrical
and telecommunications wiring, many electrical contractors are now doing low-voltage
(data) wiring so they can contract the wiring for both the electrical system and the telecommunications
system.
For a post-construction installation, you should schedule it so as to have the least impact on
the building’s occupants and on the existing network or existing building infrastructure. It also
works to schedule it in phases or sections.
Install the Cabling
Once you have a design and a proper schedule, you can proceed with the installation. We’ll
start with a discussion of the tools you will need.
See on next post
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Monday, November 1, 2010

How to install Cables

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Now that we’ve covered some of the factors to take into account when designing a cabling system,
it’s time to discuss the process of installing an entire cabling system, from start to finish.
A cabling installation involves five steps:
1. Design the cabling system.
2. Schedule the installation.
3. Install the cables.
4. Terminate the cables.
5. Test the installation.
Design the Cabling System
We’ve already covered this part of the installation in detail in this chapter. However, it’s
important enough to reiterate: Following proper cabling design procedures will ensure the
success of your cabling system installation. Before you pull a single cable, you should have a detailed plan of how the installation will proceed. You should also know the scope of the
project (how many cable runs need to be made, what connections need to be made and where,
how long the project will take, and so on). Finally, you should have the design plan available to
all people involved with the installation of the cable. That list of people includes the cabling
installer, the electrical inspector, the building inspector, and the customer (even if you are the
customer). Be sure to include anyone who needs to refer to the way the cabling is being
installed. At the very least, this information should contain a blueprint of how the cables
will be installed.
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