National Electrical Code (NEC) Article 230 2025 – 400 Free Practice Questions to Pass the Exam

Article 230 of the National Electrical Code (NEC) primarily focuses on the requirements for services, including the installation of service entrance conductors, services equipment, and service disconnecting means. One of the critical aspects emphasized in this article is the protection of service conductors against physical damage. This is vital because service conductors are exposed to various environmental conditions and potential physical hazards that could compromise the integrity of the electrical system.

By establishing standards for protecting these conductors, the NEC aims to prevent accidents, electrical fires, and equipment damage, ensuring that the electrical system operates safely and efficiently. Proper protection might include the use of conduit, raceways, or properly sized enclosures that can shield conductors from mechanical injury.

Energy efficiency, permissible voltage levels, and standardization of wiring colors are important topics within electrical safety and efficiency but are not the primary focus of Article 230.