Which article describes the Requirements for Electrical Installation?

The article that describes the requirements for electrical installation is Article 110. This section focuses on general requirements for electrical installations, including rules pertaining to safety, equipment installation, and the general practices that must be followed to ensure a safe and effective electrical system.

Article 110 outlines the necessary features that all electrical installations must adhere to, which can include aspects such as access to equipment for maintenance, requirements for markings and identification, and delineation of installation conditions that ensure safe operation. It serves as a foundational guideline for all subsequent articles that address specific applications and equipment.

Each of the other articles mentioned addresses more specific aspects of electrical installations. Article 215 deals with branch circuits and feeders, Article 230 focuses on services, and Article 450 pertains to transformers and inductors. However, these articles do not encapsulate the broad requirements for electrical installations in the same comprehensive manner that Article 110 does. Thus, Article 110 is rightly identified as the appropriate reference for the requirements of electrical installation.