Tuberias

Wheatland Tube Company
DIVISION OF JOHN MANEELY COMPANY

Standards and Specifications
Steel Conduit and Tubing
NEC® 2005

RIGID METAL CONDUIT (RMC)
ELECTRICAL METALLIC TUBING (EMT)
INTERMEDIATE METAL CONDUIT (IMC)

Rigid Metal Conduit i s a
threadable raceway of circular cross
section designed for the physical
protection and routing of conductors and cables and for use as anequipment grounding conductor
when installed with its integral or
associated coupling and appropriate fittings. RMC is generally made
of steel (ferrous) with protective coatings or aluminum (nonferrous).

Certificate Numbers:
Wheatland, PA 007172
Chicago, IL
008952
Little Rock, AR 009081

Electrical Metallic Tubing is an
unthreaded thinwall raceway of circular cross section designed for thephysical protection and routing of
conductors and cables and for use
as an equiptment grounding conductor when installed utilizing appropriate fittings. EMT is generally
made of steel (ferrous) with protective coatings or aluminum (nonferrous).

Made in U.S.A.

Intermediate Metal Conduit is a
steel threadable raceway of circular
cross section designed for the
physical protection androuting of
conductors and cables and for use
as an equipment grounding conductor when installed with its integral or associated coupling and appropriate fittings. IMC is made of
steel (ferrous) with protective coatings.
GENERAL SALES OFFICES
900 Haddon Avenue
Collingswood, NJ 08108-2162
Phone (856) 854-5400
Fax (856) 854-4973
January 2005

GALVANIZED RIGID METAL
CONDUIT (RMC)
NEC®Article 344, ANSI C80.1, U.L. 6

INTERMEDIATE METAL
CONDUIT (IMC)

ELECTRICAL METALLIC
TUBING (EMT)
NEC® Article 358, ANSI C80.3, U.L. 797

NEC® Article 342, ANSI C80.6, U.L. 1242

LISTING REQUIREMENTS:

LISTING REQUIREMENTS:

LISTING REQUIREMENTS:

RMC, factory elbows and couplings, and
associated fittings shall be listed.

EMT, factory elbows, and associated fittings
shall belisted.

IMC, factory elbows and couplings, and
associated fittings shall be listed.

TRADE SIZE:

TRADE SIZE:

TRADE SIZE:

½ - 6 Nominal; Standard length 10' (3.05 m)
with coupling.

½-4

½ - 4 Nominal; Standard length 10' (3.05 m)
with coupling

USE:

USE:

USE:

All atmospheric conditions and occupancies per
NEC® 344.10.

For exposed or concealed work per NEC®
358.10and limitations of 358.12.

All atmospheric conditions and occupancies per
NEC® 342.10.

COATING:

COATING:

COATING:

Hot-dip galvanized O.D. and zinc or organic I.D.
O.D. min. coating thickness .0008 inch.
Wheatland provides supplemental coating of
chromate or equivalent.

Galvanized (zinc) or alternate corrosion
resistant coating O.D., organic I.D.
O.D. min. coating thickness.0008 inch.
Wheatland provides supplemental coating of
chromate or equivalent.

Galvanized (zinc) or alternate corrosion
resistant coating O.D., organic I.D.
O.D. min. coating thickness .0008 inch.
Wheatland provides supplemental coating of
chromate or equivalent.

THREADS:

THREADS:

THREADS:

Both ends threaded (Tapered NPT ¾" per foot)
Coupling one end, thread protector otherend.
Threads are coated to inhibit corrosion from
taking place prior to installation.
Threads per Inch: ANSI/ASME B1.20.1
½-¾ = 14, 1-2 = 11, 2½-6 = 8

EMT shall not be threaded. Unless supplied
with factory threaded integral coupling
complying with NEC® 358.100.

Both ends threaded (Tapered NPT ¾" per foot)
Coupling one end, thread protector other end.
Threads are coated to inhibitcorrosion from
taking place prior to installation.
Threads per Inch: ANSI/ASME B1.20.1
½-¾ = 14, 1-2 = 11, 2½-4 = 8

BENDS:

BENDS:

BENDS:

No more than the equivalent of 4 quarter bends
(360° total) between pull points. Internal
diameter of conduit shall not be effectively
reduced.

No more than the equivalent of 4 quarter bends
(360° total) between pull points. Internal...