Clamp Race Way

Overview

Electrical Metallic Tubing is light gauge steel raceway used to protect wiring from physical damage and fire. It shields electrical fields emitted by the wiring and acts as a ground. The thick coating of zinc galvanization on the interior and exterior of the conduit provides excellent corrosion resistance from environmental, chemical and mechanical degradation.

Electrical metallic tubing (EMT), sometimes called thin-wall, is commonly used instead of galvanized rigid conduit (GRC), as it is less costly and lighter than GRC. Electrical Metallic Tubing itself may not be threaded, but can be used with threaded fittings that clamp to it. Lengths of conduit are connected to each other and to equipment with clamp-type fittings. Like Galvanized Rigid Conduit, Electrical metallic tubing is more common in commercial and industrial buildings.

Technical Specification

ØD = Applicable Outer Diameter of Conduit
A = Height of Clamp
B = Width of Clamp
E-1 = Applicable JIS Conduit
E-2 = Applicable BS 31 Class A ( Plain ) Conduit
E-3 = Applicable BS 31 Class B ( Screwed ) Conduit
E-4 = Applicable BS 4568 Light Gauge ( Plain ) Conduit
E-5 = Applicable BS 4578 Heavy Gauge ( Plain ) Conduit
F = Applicable Rigged PVC Conduit
G = Class 2 Flexible Conduit, PA-2
I = Flexible Conduit
     
Type A B ØD E-1 E-2 E-3 E-4 E-5 F G I
DC-13 29 19 12.0 - 0.5 0.5 - - - 10 -
DC-15 32 22 15.9 15 0.625 0.625 16 16 - 12 -
DC-19 36 26 19.1 19 0.75 0.75 20 20 - 15 13
DC-25, DG-22 42(43) 32(33) 25.4(26.5) 25-22 1 1 25 25 22 - 19
DC-31, DG-28 48(50) 38(40) 31.8(33.3) 31-28 1.25 1.25 32 32 28 - 25
DC-39 55 45 38.1 39 1.5 1.5 - - - - 31
DC-51 67 57 50.8 51 2 2 - - - - -
DC-63 81 70 63.5 63 2.5 2.5 - - - - -
DC-75, DG-70 93(92) 83(82) 76.2(75.2) 75-70 - - - - 70 - 63
DG-16 37 27 21.0 76 - - - - 16 71 15
DG-36 59 48 41.9 36 - - - - 36 38 -
DG-42 65 54 47.8 42 - - - - 42 - 39
DG-54 76 66 59.6 54 - - - - 54 - 51
DG-82 105 94 87.9 82 - - - - 82 83 75
DG-92 119 107 100.7 92 - - - - - - -
DG-104 131 120 113.4 104 - - - - - - -

Product Feature

High Corrosion Resistance

Pure zinc coating on the exterior wall and stoved epoxy resin finish on the inside protects white conduit from corrosion, even by harsh chemicals and sea air.

Easy and Fast Installation

Precise, sharp threads cut by automated machinery mean fast and easy installation. Precise thread also makes our conduit virtually moisture-tight.

Uniform Quality

Flat steel is rolled, zinc - coated and threaded in one continuous automated process for uniform high quality.