ROSSLYN, Va.—The National Electrical Manufacturers Association (NEMA) published NEMA PRP 1-2014 Guidelines for Conduit-in-Casing Construction. This document presents conduit-in-casing construction as a technically sound solution to the problem of laying power/communication cables under a surface obstruction (highway, runway, rail bed, river, etc.) without disrupting traffic roadbed, rail bed, or riverbed.
NEMA PRP 1, which was developed by the Polymer Raceway Products Technical Committee, describes the types of casings most often used as well as the advantages of concrete-in-casing construction for organization of conduits, protection of mission-critical cables, and longevity. It is useful in the construction, utilities, and electrical contracting industries.
NEMA PRP 1-2014 may be downloaded at no charge on the NEMA website.
Electrical Manufacturers Association (NEMA) represents nearly 350 electrical
equipment and medical imaging manufacturers that make safe, reliable, and efficient products
and systems. Our combined industries
account for 360,000 American jobs in more than 7,000 facilities covering every
state. Our industry produces $106 billion shipments of electrical equipment and
medical imaging technologies per year with $36 billion exports.