/ Buildings / New NEMA HDPE Conduit Guideline Published

New NEMA HDPE Conduit Guideline Published

Parul Dubey on November 23, 2017 - in Buildings, Structural components

IRVING, Texas  – The National Electrical Manufacturers Association (NEMA) has published its new Guideline for the Selection and Installation of Smooth-wall Coilable High-Density Polyethylene (HDPE) Conduit, NEMA TCB 4-2016.  Developed and written with the participation of the Plastics Pipe Institute, Inc. (PPI), it provides recommendations for the selection, handling and installation of underground HDPE conduit or raceway for power, lighting, signaling and communications applications.  PPI is the major North American trade association representing all segments of the plastic pipe industry.

 “This new guideline is very helpful for contractors, system designers and others because it provides relevant information needed for the correct installation,” stated Lance MacNevin, P. Eng., director of engineering for PPI’s Power & Communications Division.  “It applies to both direct burial and encased burial installations, and covers topics such as handling, joining methods, separation and mandreling.”

PPI’s Power & Communications Division (PCD) collaborates with standards development organizations (SDOs) that set standards for manufacturing practices, quality control, product-testing and installation methods.  PCD also educates designers, installers, users and government officials about HDPE conduit, establishes a forum for problem solving and new ideas, and maintains liaison with industry, educational and government agencies. 

HDPE conduit is used to house and protect electrical power and telecommunications cables.  Benefits, according to PPI, include availability in long lengths without joints, high strength, flexibility, proven reliability and installation toughness.  HDPE conduit, including Cable in Conduit (CIC), is widely used in trenching, horizontal directional drilling (HDD) and plowing installations.

NEMA TCB 4-2016 is available as a hard copy or as an electronic download at


 For additional information, go to the Plastics Pipe Institute’s website at:  www.plasticpipe.org.


About PPI:

The Plastics Pipe Institute, Inc. (PPI) is the major North American trade association representing all segments of the plastic pipe industry and is dedicated to promoting plastic as the materials of choice for pipe and conduit applications.  PPI is the premier technical, engineering and industry knowledge resource publishing data for use in the development and design of plastic pipe and conduit systems.  Additionally, PPI collaborates with industry organizations that set standards for manufacturing practices and installation methods.

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