This edition of the National Electrical Safety Code (NESC) establishes the minimum requirements for the safe design, installation, operation, and maintenance of electric-supply and communication systems. It provides a framework for preventing injury and loss of life from electric shock and falls caused by contact with electric-supply equipment and lines. The code is intended for use by those responsible for the safety of electrical installations and operations.

The 1977 edition of the National Electrical Safety Code is a foundational document within the electrical engineering and safety fields. It is recognized as a critical standard for ensuring the safe operation of electrical and communication systems. This code serves as a reference for professionals, regulatory bodies, and educational institutions involved in electrical safety.