Installation manual

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© Copyright 2001 Leviton Manufacturing Co., Inc.
7.4 Cabling Types and Counts for
Each Location
AC wiring varies by gauge size. The end use device or
appliance dictates the ampacity amperage of the cir-
cuit and thus your choice of cable (14/2, 12/2, etc.).
Low-voltage wiring varies by type and to a lesser extent
by gauge (most will normally be 24 AWG).
The TIA/EIA Standard 570-A proposes different grades
of residential cabling depending on the services the
cable will be providing within a residence. There are
two grades:
• Grade 1
• Grade 2
Grade 1 meets the minimum requirements for telecommu-
nication services. It can support telephone, CATV, and low
speed data applications. These minimum requirements
are a four-pair 100 ohm UTP that meet or exceed Category
3 transmission requirements and 75 ohm coaxial cables.
Grade 2 meets all of Grade 1 requirements as well as
multimedia applications and fiber optic wiring. The min-
imum cable requirements for each cabled location are
two four-pair 100 ohm UTP cables that meet or exceed
Category 5 or 5e cable and two 75 ohm coaxial cables.
Two strand 62.5/125 mm optical cable is an optional
cable for Grade 2 installations.
When a DSL modem is anticipated, allow for three (3)
category 5 or 5e jacks in a location, and when a Cable
modem is anticipated, allow for three (3) coax and two
(2) category 5 or 5e jacks in a location.
Installer’s Tip: Leviton strongly suggests that you use
nothing less than Grade 2 infrastructure, Category 5
(at a minimum) or 5e cable for your structured
voice/data cable work, and RG-6 quad shield cable for
video work.
Installer’s Tip: make sure all wire and cables meet all
local safety and fire codes, and make sure that they
are rated for in-wall use. Approved wire and cabling
will feature a classification (such as CL-2, or Class 2)
to indicate suitability for installation. Failure to follow
this procedure could result in exposure to insurance
and even legal problems.
Each end use application will determine your choice of
cable.
7.4.1 Telephone and Data Cable: Category 5 or
5e UTP
Always use Category 5 or 5e cable for these applica-
tions. When properly installed, it It can carry up to 100
Megahertz (MHz) of bandwidth and is an affordable
medium for data transfer.
7.4.2 Video Cable for CATV, TV, DSS, and Video
Monitoring: RG-6 Quad Shield Coax
For distribution of broadcast and cable TV, install RG-
6 quad-shield coax cable. This will help avoid any
customer dissatisfaction that can result even when
your installation is done perfectly, but the cable
choice wasn’t the best. RG-59, once commonly used
by cable companies for basic service, is now recom-
mended only for very short component-to-component
runs (such as behind an entertainment center). It is
barely worth an installer’s trouble to stock this second
cable variety for such minor installations and much
easier to stick with RG-6 quad-shield for all your coax
needs.
If the installation calls for it, direct burial coax cable is
available.
Installer’s Tip: Remember, minimum industry stan-
dards can bring only passable results in some instal-
lations. For this reason, Leviton recommends higher
quality structured cable for your installations.
7.4.3 Power Cable for Video Home Monitoring
Camera: Category 5 or 5e UTP
Run both a RG-6 quad shield cable for video signal and
a Category 5 or 5e cable for power to each potential
camera location. In lieu of two separate cables, a com-
posite cable containing both can be run. Remember to
leave enough extra length at each end to separate the
connections later. Since the video sequencer can han-
dle up to four cameras, it’s a good idea to plan four
camera locations and pre-wire to them.
7.4.4 Speaker Wire for Multi-Location Stereo
Speaker wire ranges from a concert blasting 8 AWG
stranded silver copper cable to a more modest 22
AWG copper, but the minimum accepted gauge for
high-fidelity reproduction is 18 AWG copper (remem-
ber, the heavier the wire’s gauge the lower the number).
Leviton recommends a 16/2 or better stranded copper,
class 2 cable. Class 2 refers to the cable’s fire rating
and it is the minimum acceptable by the NEC. Only use
wire cable marked with at least a CL 2 or CL 3 rating.
Plan to pre-wire to all volume control and speaker loca-
tions. It is best to run speaker wire separately from
other low voltage cabling.
7-9
7
SYSTEM
DESIGN
System Design
nd Placement-
Laying Out the
Basics