Describes installation procedures for shielded and non-shielded solid dielectric medium-voltage cables rated from 600 volts to 69,000 volts AC and installed in conduits, ducts, or direct buried. This publication applies to single and multi-conductor cables used for distributing power for commercial, institutional, and industrial load in nonhazardous locations both indoors and outdoors. NECA 600 is approved as an American National Standard (ANS).