Hot Dipped Galvanized Rigid Steel Conduit (RIGID)
General
Providence RIGID is manufactured from high-strength 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. RIGID produced using an inline galvanizing process. It is hot-dipped
galvanized inside and outside, so that metal to metal contact and galvanic
protection against corrosion are provided. Additionally, it is top-coated with a
compatible organic layer to inhibit white rust and increase corrosion
resistance. 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. No need
to worry about damage to the conduit system even when through multiple
90º bends.
Providence’s RIGID is produced in normal trade size from ½’’ to 4’’ in
standard lengths of 10 feet (3.05 m), including coupling.
Rigid is threaded on both ends, with a coupling applied to one end and a
thread protector to the other. The pitch of threads conforms to the American
National Standard for pipe threads, general purpose (Inch), ANSI/ASME B1.
20.1 Threads are protected after cutting by an application of molten zinc. The
quantity in primary bundle and master bundle NEMA standard bundle
quantity.
Providence RIGID 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 Rigid Steel Conduit can be installed indoors or outdoors,
exposed or concealed, in all kinds of atmospheric conditions, and in
hazardous locations, when in accordance with NEC® 2002 Article 344. Also,
it provides mechanical protection for the conductors while reducing Electro-
Magnetic Field (EMF) exposure and shielding against Electro-Magnetic
Interference (EMI).
Galvanized Steel Rigid Conduit is an approved equipment grounding
conductor under the 2002 NEC® Section 250.118. 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 it any
installation.
Specification
Providence RIGID pipe is manufactured in accordance with the latest edition
of the following:
American National Standards Institute (ANSI) – American National Standard
for Rigid Steel Tubing, ANSI® C80.1
Underwriting Laboratories Standard for Rigid-Steel, UL 6
National Electric Code® 2002-Article 344(1999 NEC Article 346)
Federal Specification- WW-C_581
The above specification may still be referenced, however the federal
government has canceled it and adopted the UL6 and ANSI C80.1
standard.
Additional information can be found in the Underwriters Laboratories Inc.,
General Information for Electrical Equipment Directory. The UL product
category for RIGID is DYIX.