Installation manual

5-2
For more information call your Leviton representative or the Leviton Technical Hotline at 800-722-2082
© Copyright 2001 Leviton Manufacturing Co., Inc.
Installation Manual
5
ACCESSORIES
Recommended
Accessories,
Tools, and Test
Equipment
Installer’s Tip: An insulated staple is an ideal fastener
for low-voltage wiring. The insulation acts as a built-in
stop that prevents the staple from crushing or stress-
ing the cables. Be sure the cable diameter does not
exceed the staple’s capacity.
5.2.1 Pulling Low-Voltage Wiring Through Wood
and Metal Framing Members
Like standard AC cable, low-voltage wiring will run
through holes in wall studs, floor joists, and rafters.
Although NEC rulings for protecting electrical cable
apply to AC conductors, structured cable systems can
be protected the same way. These rulings state:
• Cable running through framing members must be
1 1/4" or further from the nearest edge of that framing
member (Section 300-4[a][1] and [2] )
• If a cable cannot meet the 1 1/4" rule, it must be pro-
tected by a steel nailing plate attached to the edge
of the framing member
• Cable running in intermediate and rigid metal con-
duit, rigid nonmetallic conduit, and electrical metallic
tubing is exempt from the 1 1/4" rule
• Cable running through metal framing members must
be protected by a bushing or grommet unless the
cable is running inside conduit
A single low-voltage cable running through a stud hole
is unlikely to get damaged by a drywall nail or screw,
but a bundle of cables would certainly be subject to
damage. For the cost of some nailing plates, the nui-
sance and expense of replacing a damaged low-volt-
age wire inside a finished wall can be avoided.
Cable Joe® Clamp-on Cable Router
The best solution available for pulling cables
around corners.
• Saves time and money by preventing cable damage,
and allowing more effective use of installation person-
nel.
• Mounts onto any surface: trays, joists, or lag bolts to
walls.
• Routes up to 20 cables at once–even around 90°
angles.
Use j-hooks or similar devices designed to support cables.
Staples by hand, or
use staplers with
depth stops.
Use Velcro® to
keep cables from
becoming over-
cinched.
Use tie wraps
loosely on large
bundles. (See
‘Using Tie-wraps’)
Use Velcro® tie wraps and cable straps to secure large bundles.
DO NOT SHARE STUD SPACE
WITH ELECTRICAL POWER
STEEL NAILING PLATES
WALL PHONE OUTLET
BOXES ARE 48 INCHES
(122 T)
(0 32 CM)
FROM FLOOR
IF POWER
MUST BE
CROSSED,
CROSS AT
90 DEGREES
USE PLASTIC NM-TYPE
STAPLES AND LEAVE WIRE
LOOSE INSIDE STAPLE
DO NOT SHARE BORE
HOLES WITH POWER
Cable Joe®
Clamp-on Cable
Router
Part number
49001-JOE