Product Brochure

51
www.carlon.com
(2) Nonmetallic-Sheathed Cable and Electrical
Nonmetallic Tubing. Where nails or screws are likely
to penetrate nonmetallic-sheathed cable or electrical
nonmetallic tubing, a steel sleeve, steel plate, or
steel clip not less than 1.6 mm (
1
⁄16 in.)
in thickness
shall be used to protect the cable or tubing.
(C) Cables Through Spaces Behind Panels Designed
to Allow Access. Cables or raceway-type wiring
methods, installed behind panels designed to allow
access, shall be supported according to their applicable
articles.
(D) Cables and Raceways Parallel to Framing Members.
In both exposed and concealed locations, where a
cable- or raceway-type wiring method is installed
parallel to framing members, such as joists, rafters,
or studs, the cable or raceway shall be installed and
supported so that the nearest outside surface of the
cable or raceway is not less than 32 mm (1
1
⁄4 in.)
from the nearest edge of the framing member where
nails or screws are likely to penetrate. Where this
distance cannot be maintained, the cable or raceway
shall be protected from penetration by nails or screws
by a steel plate, sleeve, or equivalent at least 1.6 mm
(
1
⁄16 in.) thick.
Exception No. 1: Steel plates, sleeves, or the equivalent
shall not be required to protect rigid metal conduit,
intermediate metal conduit, rigid nonmetallic conduit,
or electrical metallic tubing.
Exception No. 2: For concealed work in finished buildings,
or finished panels for prefabricated buildings where such
supporting is impracticable, it shall be permissible to fish
the cables between access points.
Exception No. 3: Steel plates, sleeves, or the equivalent
shall not be required to protect cables or raceways in
mobile homes and recreational vehicles.
(E) Cables and Raceways Installed in Shallow Grooves.
Cable- or raceway-type wiring methods installed in a
groove, to be covered by wallboard, siding, paneling,
carpeting, or similar finish, shall be protected by
1.6 mm (
1
⁄16 in.) thick steel plate, sleeve, or equivalent
or by not less than 32 mm (1
1
⁄4 in.) free space for
the full length of the groove in which the cable or
raceway is installed.