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General
Providence EMT is manufactured from high-grade flat-rolled steel. Produced
by the electric resistance welding process. The finished conduit is uniform in
OD size, wall thickness, a defect free interior surface and smoothly welded
seams. The 1/2" - 1-1/2" EMT are made from zinc coils. The 2" - 4" EMT are
produced using an inline galvanizing process. The surface of all of them is
thoroughly coated zinc, so that metal to metal contact and galvanic protection
against corrosion are provided. Additionally, the exterior is protected by a
clear zinc chromate coating. The good interior surface quality provides
smooth continuous raceways for easy and fast wiring pulling. Its excellent
ductility provides easy bending, cutting and joining to prevent waste of time
and materials.
Providence’s EMT is produced in normal trade size from ½’’ to 4’’. EMT is
produced in standard lengths of 10 feet (3.05 m). The quantity in primary
bundle is standard bundle quantity.
Providence EMT is a UL listed product. Each pipe has been affixed a UL
label and a manufacturer label including trade size and a bar code.
Application
Galvanized Steel Electrical Metallic Tubing, National Electrical Code (NEC)®
2002 Article 358, can be installed indoors or outdoors, exposed or
concealed, in all kinds of atmospheric conditions, and in hazardous
locations, when in accordance with NEC 502.4, 503.3 and 504.20 and
providing it is not subject to severe physical damage during and after
installation and is properly protected against corrosion.
Also, it provides mechanical protection for the conductors while reducing
Electro-Magnetic Field (EMF) exposure and shielding against Electro-
Magnetic Interference (EMI). Galvanized Steel Electrical Metallic Tubing is an
approved equipment grounding conductor under the 2002 NEC® Section
250.118(4). The NEC® establishes the minimum requirements for the 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 installation.
Specifications
Providence Galvanized Steel EMT is manufactured in accordance with the
latest edition of the following:
American National Standards Institute (ANSI) – American National Standard
for Steel Electrical Metallic Tubing, ANSI® C80.3.
Underwriting Laboratories Standard for EMT-Steel, UL 797
National Electric Code® 2002-Article 358(1999 NEC Article 348)
Federal Specification- WW-C_563
The above specification may still be referenced, however the federal
government has canceled it and adopted the UL797 and ANSI C80.3
standard.
Additional information can be found in the Underwriters Laboratories Inc.,
General Information for Electrical Equipment Directory. The UL product
category for EMT is FJMX.
| Trade Size |
Nominal Wt. per 100ft. (30.5M) |
Nominal Outside Diameter |
Nominal Wall Thickness |
||||
| U.S. |
Metric |
lb. |
kg |
in |
mm |
in |
mm |
| 1/2 |
16 |
30 |
13.6 |
0.706 |
17.93 |
0.042 |
1.07 |
| 3/4 |
21 |
46 |
20.9 |
0.922 |
23.42 |
0.049 |
1.24 |
| 1 |
27 |
67 |
30.4 |
1.163 |
29.54 |
0.057 |
1.45 |
| 1-1/4 |
3535 |
101 |
45.8 |
1.510 |
38.35 |
0.065 |
1.65 |
| 1-1/2 |
41 |
116 |
52.6 |
1.740 |
44.20 |
0.065 |
1.65 |
| 2 |
53 |
148 |
67.1 |
2.197 |
55.80 |
0.065 |
1.65 |
| 2-1/2 |
63 |
215 |
98.0 |
2.875 |
73.03 |
0.072 |
1.83 |
| 3 |
78 |
263 |
119.3 |
3.500 |
88.90 |
0.072 |
1.83 |
| 3-1/2* |
91 |
249 |
158.3 |
4.000 |
101.6 |
0.083 |
2.11 |
| 4 |
103 |
393 |
178.3 |
4.500 |
114.3 |
0.083 |
2.11 |
| Trade Size |
Quantity in Primary Bundle |
Master Bundle |
|||||
| U.S. |
Metric |
Feet |
meter |
Pieces |
Feet |
Meter |
Kg |
| 1/2 |
16 |
100 |
30.5 |
700 |
7000 |
2135 |
952 |
| 3/4 |
21 |
100 |
30.5 |
500 |
5000 |
1525 |
1045 |
| 1 |
27 |
100 |
30.5 |
300 |
3000 |
915 |
912 |
| 1-1/4 |
35 |
50 |
15.2 |
200 |
2000 |
610 |
916 |
| 1-1/2 |
41 |
50 |
15.2 |
150 |
1500 |
457.5 |
789 |
| 2 |
53 |
30 |
9.15 |
120 |
1200 |
366 |
805.2 |
| 2-1/2 |
63 |
10 |
3.05 |
61 |
610 |
186.05 |
597.8 |
| 3 |
78 |
10 |
3.05 |
51 |
510 |
155.55 |
608.43 |
| 3-1/2* |
91 |
10 |
3.05 |
37 |
370 |
112.85 |
585.71 |
| 4 |
103 |
10 |
3.05 |
30 |
300 |
91.5 |
534.9 |
1/4" (+/- 6.35mm). Outside Diameter: 1/2"-2" +/- 0.005"
(+/- 0.13mm); 2-1/2" +/- 0.010" (+/- 0.25mm); 3" +/-
0.015" (+/- 0.38mm); 3-1/2" - 4" +/- 0.020" (+/- 0.51mm).
2. * Marked size may be available soon.
