Underground Installations Not Rocket Science


This informative article details the most practical aspects of underground installations, and outlines the underlying theory and principles of the Electrical Code. It includes helpful methods for finding allowable ampacities and required conductor sizes, and provides additional advice on using configurations not shown in the Code.


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The updated industry paper The Evolution of Aluminum Conductors Used for Building Wire and Cable is now available on the NEMA website. This paper describes the development and acceptance of AA-8000 series aluminum conductors for feeder and service entrance cable applications.


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