EMT
EMT Video
  • Specification
  • Applications

ELECTRIC METALLIC TUBING (UL797-ANSI 80.3)

Nominal Diameter

Outside Diameter

Wall Thickness

Length

Weight

Inch

Inch

mm

Inch

mm

FT

mm

KG/PC

1/2’’

0.706

17.93

0.042

1.07

10

3050

1.357

3/4’’

0.922

23.42

0.049

1.24

10

3050

2.069

1’’

1.163

29.54

0.057

1.45

10

3050

3.063

1-1/4’’

1.51

38.35

0.065

1.65

10

3050

4.555

1-1/2’’

1.74

44.2

0.065

1.65

10

3050

5.281

2’’

2.197

55.8

0.065

1.65

10

3050

6.720

2-1/2’’

2.875

73.03

0.072

1.83

10

3050

9.800

3’’

3.5

88.9

0.072

1.83

10

3050

11.984

3-1/2’’

4

101.6

0.083

2.11

10

3050

15.988

4’’

4.5

114.3

0.083

2.11

10

3050

17.804

Notes: Applicable tolerance

Length: 10FT ±1/4in. 3050mm ±6.35mm.

Outside Diameter:  1/2" to 2" ±0.005in.(16mm to 53mm ±0.13mm).
2-1/2" ±0.010in. (63mm ±0.25mm).                                                3" ±0.015in. (78 ±0.38mm).                                                3-1/2" to 4" ±0.020in. (91mm to 103mm ±0.51mm)


Standard:

Electrical metallic tubing (EMT), also commonly called thin-wall, is a listed steel raceway of circular cross section. EMT itself is not threaded, but can be used with threaded fittings that clamp to it. The nominally 10” and 20” lengths are also available. Covered by Article 358 of the NEC, EMT is available in trade sizes 1/2” through 4”. The outside is galvanized for corrosion protection and the inside has an approved corrosion-resistant organic coating.

EMT is installed by use of set-screw or compression-type couplings and connectors. EMT with integral couplings is available in trade sizes 1-1/4” through 4”. EMT is more common in commercial and industrial buildings than in residential applications.
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