Wheatland Galvanized

Intermediate Metal Conduit (IMC) –Steel

General
Steel Intermediate Metal Conduit is manufactured from a mild steel tube. It has an accurate circular cross section, a uniform wall thickness, a defect free interior surface, and a continuous welded seam. To protect from corrosion the exterior surface is thoroughly and evenly coated with metallic zinc applied directly to the surface of the steel so that metal-to-metal contact and galvanic protection against corrosion are provided. The interior surface is protected by an organic corrosionresistant coating to which an additional lubricating coating is applied to reduce friction during wire insertion.
Wheatland’s IMC and its associated tubular fittings are produced in nominal trade
sizes from 1/2 to 4. IMC produced in standard lengths of 10 feet (3.05m), including coupling, is  threaded on both ends, with a coupling applied to one end. A by size color-coded thread protector is
applied to the other end, to aid in trade size identification.

Yellow thread protectors represent trade sizes 1/2, 1-1/2, 2-1/2, 3-1/2, Green ¾  and 1-1/4 trade sizes, and Orange full trade sizes 1, 2, 3, and 4. The finished threads, National Pipe Taper (NPT), conforms to the American National Standard for Pipe Threads, General Purpose (Inch), ANSI/ASME B1.20.1. The taper of threads is 3/4 inch per foot (1 in 16). Threads are treated with a protective coating to prevent corrosion before installation. Each length of conduit has a label affixed which contains the UL Listing and a bar code. Each length is identified with Wheatland’s name, Logo, the product name “Intermediate Metal Conduit or IMC”, a U.L. listing number and the words, “Consult manufacturer for installation instructions”.

Applications
Wheatland Galvanized Intermediate Metal Conduit, National Electrical Code® (NEC®) 2005 Article 342, can be installed indoors or outdoors, in dry or wet locations, exposed or concealed, in all kinds
of atmospheric conditions, and in hazardous locations when in accordance with NEC® 501.4, 502.4, 503.3, and 504.20. Also, it provides excellent mechanical protection for the conductors while reducing Electro-Magnetic Field (EMF) exposure and shielding against Electro-Magnetic Interference (EMI). Galvanized Intermediate Metal Conduit is an approved equipment grounding conductor, 2005 NEC® Article 250.118(3). The NEC® establishes the minimum requirements for a safe electrical installation. Because of the varied environments in which electrical equipment is installed, local amendments are often added.

Always consult local codes prior to any installation.

Specifications Wheatland Galvanized Intermediate Metal Conduit is manufactured in accordance with the latest edition of the following:

American National Standards Institute – American National Standard for Electrical Intermediate Metal Conduit (EIMC), ANSI® C80.6

Underwriters Laboratories Standard for Electrical Intermediate Metal Conduit - Steel, UL 1242
National Electrical Code® 2005 - Article 342 (1999 NEC® Article 345) Federal Specification - WW-C-581
The above Federal specification may still be referenced, however the federal government has canceled it and adopted the  UL 1242 standard and will no longer maintain a separate standard. Intermediate
Metal Conduit was covered under WWC-581, Class 2, Type A . Additional information on the titles and designations of standards or requirements that have been used for the investigation
of products in a specific category can be found in the Underwriters Laboratories Inc.®,

General Information for Electrical Equipment Directory. The UL product category for Intermediate Ferrous Metal Conduit is DYBY. Wheatland Galvanized Intermediate Metal Conduit (IMC) -Steel
Certificate Numbers: Wheatland, PA 007172 Chicago, IL 008952

Intermediate Metal Conduit – Steel Galvanized

Trade Size
Inch

Metric
Designator

mm

Outside
Diamete

mmr

Inside
Diameter

mm

Wall
Thickness

mm

Weight 10 Unit Lengths with
Couplings

kg

½”

16

20.70

16.76

1.97

28.12

¾”

21

26.26

22.07

2.10

38.10

1”

27

32.77

28.07

2.35

53.98

1-1/4”

35

41.59

36.77

2.41

71.67

1-1/2”

41

47.82

42.74

2.54

88.00

2”

53

59.93

54.60

2.67

116.12

2-1/2”

63

72.57

64.95

3.81

200.04

3”

78

88.29

80.67

3.81

246.30

3-1/2”

91

100.86

93.24

3.81

285.31

4”

103

113.44

105.82

3.81

317.52

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