Also highly important: watch out for bait-n-switch with "cheap" cable
places. The chinese market has flooded fake Cat5 and Cat6 cables. If
the box says "CCA" in the name, do not get it. This is "Copper Clad
Aluminium" and it is basically an aluminium wire, with copper cladding.
This doesn't meet the specs, but they claim it does and sell it for a
fraction of the cost.
*Brandon Gillespie*
SaaS Operations Director, Kuali
[email protected]
801.682.3444
On 08/09/2016 01:58 PM, Doran Barton wrote:
CableWholesale sent this e-mail to me and it had some really good
information that I thought some of the newer Linux and networking geeks
might appreciate about ethernet product options:
Solid Vs Stranded Ethernet
When purchasing bulk Ethernet cable, you will be presented with a choice:
solid or stranded. If you are not sure of what your choice should be, read
on. All UL-rated network cables, both solid and stranded, are manufactured
with copper. These two different types refer to each of the internal copper
conductors inside the Ethernet cable. Stranded Ethernet cables have
multiple smaller strands of wire that are twisted together to form a single
conductor. These are flexible, and typically used for pre-made Ethernet and
other network patch cables. A solid Ethernet cable is just that, it has a
solid copper core. Solid cables are fabricated with a single, solid strand
of copper for each of the 8 conductors. These cables work best for
permanent set-ups, as they are rigid and are not very portable. Solid
Ethernet cable is designed to be installed in structured set-ups, such as
in-wall installations, as well as to be terminated to a 110-style punch
down.
Plenum Vs Non-Plenum
Two of the main questions that we at CableWholesale get about plenum
Ethernet cables are where are they used, and why are they more expensive
than other cables on the market? The answer is plenum cables are designed
for use in what is known as the "plenum" area of a building. This is the
area between floors where air circulates throughout the building. The
National Fire Protection Association has outlined fire and building safety
standards regarding what type of jacket cables must have if they will be
placed in a plenum area. Before installation, these cables must first
obtain a "plenum" rating, meaning they must meet certain requirements. This
includes being constructed with a fire-retardant jacket constructed out of
a non-flammable material, which is typically a low-smoke polyvinyl chloride
(PVC) jacket. This will ensure that the cable will not emit toxic smoke in
the event of a fire. This will also prevent the cable from reigniting after
self-extinguishing. These are important factors when a cable is placed in
an area where air is circulating, as the smoke that is emitted from the
cable will be pushed out of the air ducts throughout the building. The most
popular styles of cable that come in plenum include coax, networking and
security cables. Plenum cables are also referred to as a "CMP" type.
Shielded (FTP/STP) Vs Non-Shielded (UTP)
On the quest for cables you may run into the shielded variety of Ethernet
cables, and wonder in what situation you might need a shielded option?
Shielded cables are necessary in busy electrical environments, where there
is a high level of electromagnetic interference, otherwise known as EMI.
These cables are designed to block out EMI with aluminum. They are built
with an aluminum protective cover which surrounds the cable's internal
wires. This aluminum shield deflects "noise" from other electromagnetic
devices.
Non-shielded is also referred to as "UTP" which stands for unshielded
twisted pair. Alternately, shielded is referred to as "FTP" which stands
for foiled, twisted pair. There is also "STP", which stands for shielded,
twisted pair. While an "FTP" cable has a foil shield around the entire
cable, an "STP" cable has a foil shield around each of the four individual
twisted pairs.
This video is also helpful for making ethernet cables with RJ45 connectors:
https://www.youtube.com/watch?v=YW4bsTsXZEE
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